[{"data":1,"prerenderedAt":4444},["ShallowReactive",2],{"sidebar-nodes":3,"node-chord":2438,"related-nodes-degree":2813},[4,57,615,866,1157,1360,1618,2142,2306],{"id":5,"title":6,"body":7,"description":41,"domains":42,"draft":44,"extension":45,"lead":46,"meta":47,"navigation":48,"path":49,"relatedNotes":50,"relations":50,"seo":51,"stem":52,"tags":53,"titleEn":55,"__hash__":56},"nodes\u002Fnodes\u002Fabout.md","このサイトについて",{"type":8,"value":9,"toc":36},"minimark",[10,19,23,30],[11,12,13,14,18],"p",{},"Ring Rong は、音楽理論を ",[15,16,17],"strong",{},"鳴らしながら確かめる"," サイト。読むだけじゃなく、鍵盤を触って、聴いて、納得する。上達のための練習場ではなくて、「あ、そういうことか」と気づくための場所。",[20,21,22],"h2",{"id":22},"はじめまして",[24,25,27],"say",{"by":26},"リン",[11,28,29],{},"リン。音楽理論？まあ、ちょっと気になるだけ。……いや、ほんとはけっこう知りたい。",[24,31,33],{"by":32},"ロン",[11,34,35],{},"ロンです。音楽の話と、それを誰かに話すのが好き。リンが「なんで？」って言うと、つい鍵盤を出してきちゃう。",{"title":37,"searchDepth":38,"depth":38,"links":39},"",2,[40],{"id":22,"depth":38,"text":22},"Ring Rong は、音楽理論を 鳴らしながら確かめる サイト。読むだけじゃなく、鍵盤を触って、聴いて、納得する。上達のための練習場ではなくて、「あ、そういうことか」と気づくための場所。",[43],"meta",false,"md","Ring Rong は、音楽理論を鳴らしながら確かめるラボノート。読むだけじゃなく、鍵盤を触って、聴いて、納得する。",{},true,"\u002Fnodes\u002Fabout",null,{"title":6,"description":41},"nodes\u002Fabout",[54],"Info","About","dHI6oH8tGWlJqBght9eaUqYoO5VdjS-QUQYeVV4vfPA",{"id":58,"title":59,"body":60,"description":37,"domains":594,"draft":44,"extension":45,"lead":596,"meta":597,"navigation":48,"path":598,"relatedNotes":599,"relations":606,"seo":609,"stem":610,"tags":611,"titleEn":613,"__hash__":614},"nodes\u002Fnodes\u002Fchord.md","コードって何？",{"type":8,"value":61,"toc":588},[62,72,81,86,119,124,144,148,153,162,167,204,209,234,243,247,252,261,264,276,280,304,309,336,345,349,354,359,363,374,378,467,472,481,485,490,516,521,530,535,547],[24,63,64],{"by":26},[11,65,66,67,71],{},"ね、コードって結局なんなの？ギターの教本に ",[68,69,70],"note",{},"C"," とか Am とか G7 とかいっぱい書いてあるけど、よくわからない。",[24,73,74],{"by":32},[11,75,76,77,80],{},"あー、コード。一言でいうと、",[15,78,79],{},"音を同時に鳴らしたもの","。それだけ。",[24,82,83],{"by":26},[11,84,85],{},"それだけ？",[24,87,88,91,98,106],{"by":32},[11,89,90],{},"うん。複数の音を一緒に鳴らすと「和音」になる。和音の英語名が「コード（chord）」。",[11,92,93,94,97],{},"理屈は単純で、",[15,95,96],{},"どの音を組み合わせるか","にルールがあるから、見慣れない名前が並んでるんだ。",[99,100],"play-keyboard",{"highlight":101,"label":102,"notes":101,"octaves":103,"start-octave":104,"duration":105},"C4,E4,G4","C メジャー","2","4","1.5",[11,107,108,109,111,112,111,115,118],{},"これが一番基本のコード、シー・メジャー。 ",[68,110,70],{},", ",[68,113,114],{},"E",[68,116,117],{},"G"," の3つを同時に鳴らしただけ。",[24,120,121],{"by":26},[11,122,123],{},"3つでコード？2つじゃダメなの？",[24,125,126,133],{"by":32},[11,127,128,129,132],{},"2つでも「2和音」って言うこともあるけど、",[15,130,131],{},"音楽でいう「コード」は基本3つから","。理由はあとでわかる。",[11,134,135,136,139,140,143],{},"3つの音でつくるコードを「",[15,137,138],{},"三和音（さんわおん）","」、英語で ",[15,141,142],{},"triad","（トライアド）って呼ぶ。コードの基礎中の基礎。",[20,145,147],{"id":146},"三和音の作り方-3度を積む","三和音の作り方 — 3度を積む",[24,149,150],{"by":26},[11,151,152],{},"で、その3つの音はどう選ぶの？適当に3つ選ぶわけじゃないでしょ？",[24,154,155],{"by":32},[11,156,157,158,161],{},"そう、ルールがある。",[15,159,160],{},"「3度」を2回積む"," だけ。",[24,163,164],{"by":26},[11,165,166],{},"3度の話、前にやったやつだ。「音と音の距離を数で数える」やつ。",[24,168,169,172,177,197],{"by":32},[11,170,171],{},"そう。基準の音から3度上、さらにそこから3度上、で3つの音を作る。",[99,173],{"highlight":101,"label":174,"notes":101,"octaves":103,"start-octave":104,"gap":175,"markings":176},"C → E → G","0.4","C4:1,E4:3,G4:5",[11,178,179,181,182,184,185,181,187,189,190,111,192,111,194,196],{},[68,180,70],{}," から3度上が ",[68,183,114],{},"。 ",[68,186,114],{},[68,188,117],{},"。これで ",[68,191,70],{},[68,193,114],{},[68,195,117],{}," の3音。",[11,198,199,200,203],{},"鍵盤の上では、",[15,201,202],{},"白鍵を1つ飛ばしに3つ選ぶ"," だけ。だから「3度を積む」って言うんだ。",[24,205,206],{"by":26},[11,207,208],{},"あー、1つ飛ばし。ピアノで弾くときの形そのままだ。",[24,210,211,218,231],{"by":32},[11,212,213,214,217],{},"うん。三和音は、根っこの音（",[15,215,216],{},"ルート","）から数えて：",[219,220,221,225,228],"ul",{},[222,223,224],"li",{},"1番目（ルート）",[222,226,227],{},"3番目（3rd, サード）",[222,229,230],{},"5番目（5th, フィフス）",[11,232,233],{},"がセット。「1-3-5」って覚え方をする人も多いよ。",[235,236,240],"ticket",{"label":237,"suffix":37,"title":238,"value":239},"Triad","三和音 = 3度を2回積む","1-3-5",[11,241,242],{},"基準音（ルート）から数えて1番目・3番目・5番目の音。白鍵を1つ飛ばしに3つ選ぶだけで三和音が作れる。Western music のコードの基本構造。",[20,244,246],{"id":245},"メジャーとマイナー-真ん中の音で決まる","メジャーとマイナー — 真ん中の音で決まる",[24,248,249],{"by":26},[11,250,251],{},"さっき C コードを「シー・メジャー」って言ってたけど、メジャーとマイナーってどういう違い？",[24,253,254],{"by":32},[11,255,256,257,260],{},"これも構造で説明できるんだよ。",[15,258,259],{},"真ん中の音（3rd）の位置","で決まる。",[99,262],{"highlight":101,"label":102,"notes":101,"octaves":103,"start-octave":104,"duration":105,"black-labels":263},"true",[24,265,266],{"by":32},[11,267,268,269,111,271,111,273,275],{},"こっちが C メジャー。 ",[68,270,70],{},[68,272,114],{},[68,274,117],{},"。",[99,277],{"highlight":278,"label":279,"notes":278,"octaves":103,"start-octave":104,"duration":105,"black-labels":263},"C4,D#4,G4","C マイナー",[24,281,282,292],{"by":32},[11,283,284,285,111,287,111,290,275],{},"こっちが C マイナー。 ",[68,286,70],{},[68,288,289],{},"Eb",[68,291,117],{},[11,293,294,295,297,298,300,301,161],{},"違いは、真ん中の ",[68,296,114],{}," が ",[68,299,289],{}," に ",[15,302,303],{},"半音下がってる",[24,305,306],{"by":26},[11,307,308],{},"え、それだけ？それだけで「明るい」「暗い」が全然違うじゃん。",[24,310,311,314,317,333],{"by":32},[11,312,313],{},"そう、たった半音。でも音楽的にはこの半音が決定的。",[11,315,316],{},"理屈で言うと：",[219,318,319,326],{},[222,320,321,322,325],{},"メジャー = ルートから3度上が ",[15,323,324],{},"長3度","（半音4個ぶん）",[222,327,328,329,332],{},"マイナー = ルートから3度上が ",[15,330,331],{},"短3度","（半音3個ぶん）",[11,334,335],{},"たった半音1つで「明るい \u002F 暗い」が変わる、っていうのがコードの面白いところ。",[235,337,342],{"label":338,"suffix":339,"title":340,"value":341},"Quality","次第","明暗は真ん中の音で決まる","3rd",[11,343,344],{},"ルートと5度はメジャー／マイナー共通。違いは真ん中の3度だけ。長3度ならメジャー（明るい）、短3度ならマイナー（暗い）。半音1つの差で逆転する。",[20,346,348],{"id":347},"_5度も動かすとさらに2種類","5度も動かすと、さらに2種類",[24,350,351],{"by":26},[11,352,353],{},"じゃあ5度を動かしてみたらどうなるの？",[24,355,356],{"by":32},[11,357,358],{},"お、いいとこ突いてくる。5度も上下できる。組み合わせると三和音は4種類になるんだ。",[99,360],{"highlight":361,"label":362,"notes":361,"octaves":103,"start-octave":104,"duration":105,"black-labels":263},"C4,D#4,F#4","C dim",[24,364,365,371],{"by":32},[11,366,367,368,370],{},"これは ",[15,369,362],{},"（シー・ディミニッシュ）。短3度＋減5度。両方狭めたパターン。すごく不安定で、次の音に進みたくなる響き。",[11,372,373],{},"逆に両方広げると：",[99,375],{"highlight":376,"label":377,"notes":376,"octaves":103,"start-octave":104,"duration":105,"black-labels":263},"C4,E4,G#4","C aug",[24,379,380,385,388,464],{"by":32},[11,381,382,384],{},[15,383,377],{},"（シー・オーグメント、Augmented）。長3度＋増5度。フワッと宙に浮いたような響き。",[11,386,387],{},"整理すると：",[389,390,391,409],"table",{},[392,393,394],"thead",{},[395,396,397,401,403,406],"tr",{},[398,399,400],"th",{},"コード",[398,402,341],{},[398,404,405],{},"5th",[398,407,408],{},"響き",[410,411,412,426,438,451],"tbody",{},[395,413,414,418,420,423],{},[415,416,417],"td",{},"メジャー",[415,419,324],{},[415,421,422],{},"完全5度",[415,424,425],{},"明るい",[395,427,428,431,433,435],{},[415,429,430],{},"マイナー",[415,432,331],{},[415,434,422],{},[415,436,437],{},"暗い",[395,439,440,443,445,448],{},[415,441,442],{},"dim",[415,444,331],{},[415,446,447],{},"減5度",[415,449,450],{},"不安定",[395,452,453,456,458,461],{},[415,454,455],{},"aug",[415,457,324],{},[415,459,460],{},"増5度",[415,462,463],{},"浮遊感",[11,465,466],{},"たった4種類。",[24,468,469],{"by":26},[11,470,471],{},"へえ、4つしかないんだ。ギターの教本ってもっと無数にあるみたいに見える。",[24,473,474],{"by":32},[11,475,476,477,480],{},"コード名がたくさん見えるのは、",[15,478,479],{},"この4種類に7番目の音（7th）を足したり、別の色付け（sus, add）したり"," して増やしてるから。基本は4種類だけだよ。",[20,482,484],{"id":483},"なんで3つが単位なのか","なんで「3つ」が単位なのか",[24,486,487],{"by":26},[11,488,489],{},"さっき「2つじゃダメ」って言ってたよね。3つだとどうしてキャラ立つの？",[24,491,492,495,509,513],{"by":32},[11,493,494],{},"これがコードの本質的なところで。",[11,496,497,498,501,502,505,506,508],{},"2つの音だと、",[15,499,500],{},"メジャーともマイナーとも決まらない","。:note",[503,504,70],"span",{}," と ",[68,507,117],{}," だけ鳴らしても、3度（長 or 短）が入ってないから「明るい・暗い」が決まらないんだ。",[99,510],{"highlight":511,"label":512,"notes":511,"octaves":103,"start-octave":104,"duration":105},"C4,G4","C と G だけ",[11,514,515],{},"3つ目の音（3度）が入って、初めてコードが「キャラ」を持つ。だから三和音が基本単位。",[24,517,518],{"by":26},[11,519,520],{},"あー、真ん中の音が「明暗の決定権」を持ってるんだ。",[24,522,523],{"by":32},[11,524,525,526,529],{},"そう。",[15,527,528],{},"3度はコードの性格を決める音","。これだけ覚えておけば、Cmaj7 とか Am7 みたいな複雑そうな名前も、ぜんぶ「ルート + 3rd + 5th + 何か」って構造で見られるようになるよ。",[24,531,532],{"by":26},[11,533,534],{},"意外と単純な作りなんだね、コードって。",[24,536,537,544],{"by":32},[11,538,539,540,543],{},"うん。",[15,541,542],{},"3度を2つ積む、真ん中で性格が決まる","。これがコードの 8 割。",[11,545,546],{},"下のキーボードの右に「CHORDS \u002F DIATONIC」っていうパネルがあるから、ダイアトニックの I〜vii° を順に触ってみると、雰囲気の違いが体感できると思うよ。",[548,549,550,563,576,582],"qa-grid",{},[551,552,554],"qa-card",{"question":553},"C と Cm の違いって、結局なに？",[11,555,556,557,559,560,562],{},"真ん中の3rd（3番目の音）だけ。C は ",[68,558,114],{},"、Cm は ",[68,561,289],{},"。半音1個ぶんしか違わないけど、明暗が逆。",[551,564,566],{"question":565},"ギターやピアノで C コードを弾くとき、3音だけなの？",[11,567,568,569,111,571,111,573,575],{},"「鳴ってる音の種類」は3音。でも実際にはオクターブ違いで重複して鳴らすことが多い。例えば C を弦4本で「C・E・G・C」と弾くと音は4つあるけど、種類は ",[68,570,70],{},[68,572,114],{},[68,574,117],{}," の3つだけ。",[551,577,579],{"question":578},"ダイアトニックって何？",[11,580,581],{},"キー（調）の中で自然に出てくる7つのコードのこと。C メジャーキーなら C・Dm・Em・F・G・Am・B°。下のキーボードの右にあるパッドで触れるよ。",[551,583,585],{"question":584},"3度を3つ4つ積んだら？",[11,586,587],{},"4音目（7th）を積むと、Cmaj7 とか C7 みたいな「セブンス・コード」になる。5音目以降を積むのも普通にあって、9th・11th・13th とか。重ねるほど色が複雑になる。",{"title":37,"searchDepth":38,"depth":38,"links":589},[590,591,592,593],{"id":146,"depth":38,"text":147},{"id":245,"depth":38,"text":246},{"id":347,"depth":38,"text":348},{"id":483,"depth":38,"text":484},[595],"入門","音を3つ重ねたものがコード。鍵盤の上で「3度を2回積む」という単純なルールから、メジャーもマイナーも全部生まれる。",{},"\u002Fnodes\u002Fchord",[600,603],{"to":601,"by":32,"text":602},"degree","コードは「3度を2回積む」だけで作れる。度の話がそのまま下地になる。",{"to":604,"by":26,"text":605},"enharmonic","メジャーとマイナーは「真ん中の音が半音下がるかどうか」。黒鍵の話とも繋がる。",{"prerequisite":607,"extends":608},[601],[],{"title":59,"description":37},"nodes\u002Fchord",[612,595],"Theory","Chords","1GIoMG4kG68-tqqHcK_g6_OKAKFWXT97uiu1NSIhzvs",{"id":616,"title":617,"body":618,"description":37,"domains":841,"draft":44,"extension":45,"lead":842,"meta":843,"navigation":48,"path":844,"relatedNotes":845,"relations":857,"seo":861,"stem":862,"tags":863,"titleEn":864,"__hash__":865},"nodes\u002Fnodes\u002Fdegree.md","度って何？",{"type":8,"value":619,"toc":837},[620,625,661,666,669,679,700,711,719,724,733,737,748,763,768,782,787,794,799,807],[24,621,622],{"by":26},[11,623,624],{},"ね、ロン。「3度ハモる」とか「5度跳ぶ」とか聞くんだけど、度って何？",[24,626,627,634,643,651],{"by":32},[11,628,629,630,633],{},"あー、それね。度っていうのは、音と音のあいだを ",[15,631,632],{},"音の数"," で数える単位なんだ。",[11,635,636,637,639,640,642],{},"たとえば ",[68,638,70],{}," から ",[68,641,114],{}," まで。",[99,644],{"highlight":645,"label":646,"notes":647,"octaves":648,"start-octave":104,"gap":649,"markings":650},"C4,E4","C → D → E","C4,D4,E4","1","0.3","C4:1,D4:2,E4:3",[11,652,653,505,655,505,658,660],{},[68,654,70],{},[68,656,657],{},"D",[68,659,114],{}," で3つぶん。だから「3度」って呼ぶんだ。",[24,662,663],{"by":26},[11,664,665],{},"ふーん、数で言うのか。",[20,667,668],{"id":668},"始点も含めて数える",[24,670,671],{"by":26},[11,672,673,674,639,676,678],{},"ちょっと待って。じゃあ ",[68,675,70],{},[68,677,657],{}," までは？ 1個しか飛んでないから……1度？",[24,680,681,688,695],{"by":32},[11,682,683,684,687],{},"あ、そこは違くて、",[15,685,686],{},"始点も含めて"," 数えるんだよ。",[11,689,690,505,692,694],{},[68,691,70],{},[68,693,657],{}," で2つ。だから2度。",[99,696],{"highlight":697,"label":698,"notes":697,"octaves":648,"start-octave":104,"gap":649,"markings":699},"C4,D4","C → D","C4:1,D4:2",[24,701,702],{"by":26},[11,703,704,705,639,707,710],{},"え、じゃあ ",[68,706,70],{},[68,708,709],{},"C5"," は……1度になる？",[24,712,713,716],{"by":32},[11,714,715],{},"うん、1度。同じ音同士でも「0度」じゃなくて1度。",[11,717,718],{},"ちょっと不思議だけど、これが度の数え方なんだ。",[24,720,721],{"by":26},[11,722,723],{},"へえ、何個ぶん「離れた」じゃなくて、「○個目」って数える感じか。",[235,725,730],{"label":726,"suffix":727,"title":728,"value":729},"Rule","個","度 = 音の数（始点込み）","始点+",[11,731,732],{},"C→E は3度（C, D, E で3つ）、C→G は5度（C, D, E, F, G で5つ）。同じ音同士でも1度（始点だけで1つ）。",[20,734,736],{"id":735},"数だけだと実はちょっとざっくり","数だけだと、実はちょっとざっくり",[24,738,739],{"by":26},[11,740,741,742,744,745,747],{},"じゃあ「3度ハモる」って、たとえば ",[68,743,70],{}," なら ",[68,746,114],{}," と一緒に鳴らせばいいの？",[24,749,750,753,756,760],{"by":32},[11,751,752],{},"基本はそう。でも実は、同じ「3度」のなかにも、響きが2つあるんだよね。",[99,754],{"highlight":645,"label":755,"notes":645,"octaves":648,"start-octave":104,"duration":105},"C と E",[99,757],{"highlight":758,"label":759,"notes":758,"octaves":648,"start-octave":104,"duration":105},"C4,D#4","C と E♭",[11,761,762],{},"どっちも文字で数えれば C, D, E の3つで「3度」。でも半音1つぶん、後ろのほうが近い。",[24,764,765],{"by":26},[11,766,767],{},"あー、後ろのほう、ちょっと暗い感じ。",[24,769,770,779],{"by":32},[11,771,772,773,775,776,778],{},"そう、それ。前者を ",[15,774,324],{},"、後者を ",[15,777,331],{}," って呼ぶ。",[11,780,781],{},"数で大きい枠（3度）を、質（長／短）で中の細かさを表してる感じなんだ。",[24,783,784],{"by":26},[11,785,786],{},"じゃあ「5度」とかも、いろんな5度があるってこと？",[24,788,789],{"by":32},[11,790,539,791,793],{},[15,792,422],{},"、減5度、増5度、ってある。ふつう「5度」って言うときは完全5度を指すことが多いけどね。",[24,795,796],{"by":26},[11,797,798],{},"そっか、5度って実は1種類じゃないのか。",[235,800,804],{"label":338,"suffix":801,"title":802,"value":803},"半音","長 ⇄ 短 = 半音1つ","+1",[11,805,806],{},"同じ「3度」でも、長3度と短3度は半音1つぶん違う。数（度）で大きい枠を、質（長／短／完全）で半音単位の細かさを表す。",[548,808,809,815,825,831],{},[551,810,812],{"question":811},"長・短・完全って、どう違うの？",[11,813,814],{},"音程の「質」の呼び方だよ。1度・4度・5度・8度には「完全」が、2度・3度・6度・7度には「長／短」が付く。同じ数でも質で半音1つぶん変わる。",[551,816,818],{"question":817},"数えるとき、黒鍵は？",[11,819,820,821,824],{},"度は ",[15,822,823],{},"音名の文字（C, D, E, ...）"," で数えるよ。だから C と E♭ も、文字としては C, D, E の3つで「3度」。半音の数は質（長／短）のほうで区別する。",[551,826,828],{"question":827},"黒鍵から数えるときは？",[11,829,830],{},"「F#」と呼ぶか「G♭」と呼ぶかで数える文字が変わるよ。F# → A は F, G, A で3度、G♭ → B♭ は G, A, B で3度。物理的には同じ鍵盤でも、音名で書き分ける。",[551,832,834],{"question":833},"8度ってあるの？",[11,835,836],{},"あるよ。1オクターブ上の同名音（C→C）は8度。完全8度って呼ぶ。",{"title":37,"searchDepth":38,"depth":38,"links":838},[839,840],{"id":668,"depth":38,"text":668},{"id":735,"depth":38,"text":736},[595],"「3度ハモる」「5度跳ぶ」の「度」。音と音のあいだを、音の数で数える単位。始点も含めるのがポイント。",{},"\u002Fnodes\u002Fdegree",[846,849,851,854],{"to":847,"by":32,"text":848},"chord","度を「2回積む」とコードになる。応用編はこっち。鍵盤を弾きながら確かめると速い。",{"to":604,"by":32,"text":850},"数え方の基本を読んだら、黒鍵の名前の話に進むと、もう一段ロジックが見える。",{"to":852,"by":32,"text":853},"note-name","度は「音名で数える」のがミソだから、音名の記事を押さえておくと楽だよ。",{"to":855,"by":26,"text":856},"interval","度って数え方の話だけど、「音と音の距離」は音程と一緒。先に音程を読んでおくとつながりやすい。",{"prerequisite":858,"extends":859},[852],[855,604,847,860],"scale",{"title":617,"description":37},"nodes\u002Fdegree",[612,595],"Degree","a0Juo-1TyfyqHDX9QynxF5TERhinpO6BmXwCvaUZrDg",{"id":867,"title":868,"body":869,"description":37,"domains":1141,"draft":44,"extension":45,"lead":1143,"meta":1144,"navigation":48,"path":1145,"relatedNotes":1146,"relations":1149,"seo":1152,"stem":1153,"tags":1154,"titleEn":1155,"__hash__":1156},"nodes\u002Fnodes\u002Fenharmonic.md","黒鍵から度を数える",{"type":8,"value":870,"toc":1136},[871,876,884,889,898,903,907,931,936,940,945,970,980,991,996,1005,1009,1025,1036,1041,1066,1071,1083,1088,1097,1102,1111,1116],[24,872,873],{"by":26},[11,874,875],{},"ね、前に「黒鍵から数えるときは F♯ か G♭ かで違う」って言ってたよね。同じ鍵盤なのに、なんで両方つかうの？",[24,877,878,881],{"by":32},[11,879,880],{},"あー、それね。同じ場所の鍵盤でも、文脈によって名前が違うんだ。",[11,882,883],{},"そして名前が違うと、数え方も変わる。",[24,885,886],{"by":26},[11,887,888],{},"名前が変わると……数え方も？",[24,890,891],{"by":32},[11,892,893,894,897],{},"うん。度は ",[15,895,896],{},"音名（C, D, E, ...）の文字"," で数えるから、F♯ から始めるか G♭ から始めるかで、出てくる文字が違うんだよね。",[24,899,900],{"by":26},[11,901,902],{},"ちょっと、実際にやってみたい。",[20,904,906],{"id":905},"f-から数えると","F♯ から数えると",[24,908,909,912,918],{"by":32},[11,910,911],{},"じゃあ F♯ から 3度上を数えてみよう。",[99,913],{"black-labels":263,"highlight":914,"label":915,"notes":916,"octaves":648,"start-octave":104,"gap":649,"markings":917},"F#4,A4","F♯ → G → A","F#4,G4,A4","F#4:1,G4:2,A4:3",[11,919,920,111,923,111,925,928,929,275],{},[68,921,922],{},"F#",[68,924,117],{},[68,926,927],{},"A"," の3つで3度。答えは ",[68,930,927],{},[24,932,933],{"by":26},[11,934,935],{},"うん、シンプル。F の次が G、その次が A だから。",[20,937,939],{"id":938},"同じ場所g-から数えると","同じ場所、G♭ から数えると",[24,941,942],{"by":26},[11,943,944],{},"じゃあ G♭ から数えるとどうなるの？同じ鍵盤じゃないの？",[24,946,947,950,956],{"by":32},[11,948,949],{},"鍵盤は同じだよ。でも名前を G♭ にすると、数え方は G から始まる。",[99,951],{"black-labels":263,"highlight":952,"label":953,"notes":954,"octaves":648,"start-octave":104,"gap":649,"markings":955},"F#4,A#4","G♭ → A♭ → B♭","F#4,G#4,A#4","F#4:1,G#4:2,A#4:3",[11,957,958,111,961,111,964,928,967,969],{},[68,959,960],{},"Gb",[68,962,963],{},"Ab",[68,965,966],{},"Bb",[68,968,966],{},"。物理的には同じ場所だけど、書き方が違う。",[24,971,972],{"by":26},[11,973,974,975,505,977,979],{},"えっ、ちょっと待って。 ",[68,976,927],{},[68,978,966],{}," って、同じ鍵盤じゃないよね？",[24,981,982,988],{"by":32},[11,983,984,985,275],{},"そう、ここがポイント。F♯ からの3度上は A、G♭ からの3度上は B♭。",[15,986,987],{},"最後の鍵盤も違う",[11,989,990],{},"数え方が違うから、当然の結果なんだけどね。",[24,992,993],{"by":26},[11,994,995],{},"へえ……。名前で数えてるから、同じ場所から始めても別の景色になる。",[235,997,1002],{"label":998,"suffix":999,"title":1000,"value":1001},"Naming","に決める","黒鍵は名前を選んでから数える","先",[11,1003,1004],{},"F♯ と G♭ は物理的に同じ鍵盤。でも度を数えるときは、まずどちらの文字（F か G か）として扱うかを決めてから。文字が決まれば、上に積む数え方も決まる。",[20,1006,1008],{"id":1007},"同じ場所なのに度数が違う","同じ場所なのに、度数が違う？",[24,1010,1011],{"by":26},[11,1012,1013,1014,639,1016,1018,1019,639,1021,1024],{},"じゃあもうひとつ気になる。たとえば ",[68,1015,70],{},[68,1017,289],{}," と、 ",[68,1020,70],{},[68,1022,1023],{},"D#"," って、同じ場所だよね？",[24,1026,1027,1030,1033],{"by":32},[11,1028,1029],{},"そう、E♭ と D♯ は同じ鍵盤。",[99,1031],{"black-labels":263,"highlight":758,"label":1032,"notes":758,"octaves":648,"start-octave":104,"duration":105},"C と D♯（= E♭）",[11,1034,1035],{},"でも、名前で数えると……",[24,1037,1038],{"by":26},[11,1039,1040],{},"C, D♯ ……2つで2度？",[24,1042,1043,1049,1053,1058,1063],{"by":32},[11,1044,1045,1046,778],{},"そう、C → D♯ は2度。",[15,1047,1048],{},"増2度",[99,1050],{"black-labels":263,"highlight":758,"label":1051,"notes":758,"octaves":648,"start-octave":104,"gap":649,"markings":1052},"C → D♯ = 2度（増2度）","C4:1,D#4:2",[11,1054,1055,1056,275],{},"一方、C → E♭ は文字で数えると C, D, E の3つで3度。",[15,1057,331],{},[99,1059],{"black-labels":263,"highlight":758,"label":1060,"notes":1061,"octaves":648,"start-octave":104,"gap":649,"markings":1062},"C → E♭ = 3度（短3度）","C4,D4,D#4","C4:1,D4:2,D#4:3",[11,1064,1065],{},"鍵盤の場所も響きも全く同じ。でも、書き方ひとつで度数が違う。",[24,1067,1068],{"by":26},[11,1069,1070],{},"ええ、それは混乱する。",[24,1072,1073,1080],{"by":32},[11,1074,1075,1076,1079],{},"これが「",[15,1077,1078],{},"異名同音","（いめいどうおん）」っていう現象なんだ。同じ音でも、文脈で名前を選ぶ。",[11,1081,1082],{},"スケールやコードのなかで「次の文字」がほしいときは E♭ を使うし、「半音上がった D」が欲しいときは D♯ を使う。状況で書き分ける。",[24,1084,1085],{"by":26},[11,1086,1087],{},"鍵盤で見ると「同じ音」だけど、音楽の文章のなかでは「別物」って感じか。",[24,1089,1090],{"by":32},[11,1091,1092,1093,1096],{},"そう、それが近いね。鍵盤じゃなく ",[15,1094,1095],{},"音名のロジック"," で度は決まるんだ。",[24,1098,1099],{"by":26},[11,1100,1101],{},"なるほど、鍵盤だけ見てても答えは出ないんだ。",[235,1103,1108],{"label":1104,"suffix":1105,"title":1106,"value":1107},"Enharmonic","≠ 同度","同じ音、違う名前 → 違う度","同音",[11,1109,1110],{},"C → D♯ と C → E♭ は同じ鍵盤・同じ響き。でも前者は「増2度」、後者は「短3度」と、度の数も質も違う。度は鍵盤じゃなく音名で決まる。",[24,1112,1113],{"by":26},[11,1114,1115],{},"そっか、鍵盤の「ここからここまで」じゃなくて、「この文字からこの文字まで」で考えるんだ。",[548,1117,1118,1124,1130],{},[551,1119,1121],{"question":1120},"どっちの名前を使うかは、誰が決めるの？",[11,1122,1123],{},"曲のキー（調）や、その場の文脈で決まるよ。F♯ メジャーのスケールなら全部 ♯、G♭ メジャーなら全部 ♭、というふうに揃える。",[551,1125,1127],{"question":1126},"「増2度」と「短3度」って響きは同じ？",[11,1128,1129],{},"ピアノで弾けば同じだよ。でも音楽の文章としては別物として扱う。マイナースケールでは「増2度」が出てきても「短3度」と書かない、みたいな使い分けがある。",[551,1131,1133],{"question":1132},"C♯ と D♭ も同じ？",[11,1134,1135],{},"そう、同じ。物理的には全部の黒鍵に2つの名前がある（C♯\u002FD♭、D♯\u002FE♭、F♯\u002FG♭、G♯\u002FA♭、A♯\u002FB♭）。場面によって選ぶんだ。",{"title":37,"searchDepth":38,"depth":38,"links":1137},[1138,1139,1140],{"id":905,"depth":38,"text":906},{"id":938,"depth":38,"text":939},{"id":1007,"depth":38,"text":1008},[1142],"発展","「度って何？」のつづき。同じ鍵盤でも F♯ と呼ぶか G♭ と呼ぶかで数え方が変わる、「名前の選び方」で音楽のロジックが決まる話。",{},"\u002Fnodes\u002Fenharmonic",[1147],{"to":601,"by":32,"text":1148},"黒鍵を扱う前に、まずこっちの「度の数え方」を読んでおくと話が早いんだ。",{"prerequisite":1150,"extends":1151},[601],[],{"title":868,"description":37},"nodes\u002Fenharmonic",[612,1142],"Degree on Black Keys","4kJq7ygVnbOQOnPraQt_2fiPZvdl6JWChIQY8984xgs",{"id":1158,"title":1159,"body":1160,"description":37,"domains":1343,"draft":44,"extension":45,"lead":1344,"meta":1345,"navigation":48,"path":1346,"relatedNotes":1347,"relations":1352,"seo":1355,"stem":1356,"tags":1357,"titleEn":1358,"__hash__":1359},"nodes\u002Fnodes\u002Finterval.md","音程って何？",{"type":8,"value":1161,"toc":1339},[1162,1170,1194,1199,1203,1208,1222,1230,1248,1253,1259,1263,1271,1283,1288,1293,1298],[24,1163,1164,1167],{"by":26},[11,1165,1166],{},"ね、ロン。この前歌ってたら「音程ズレてる」って言われたんだけど。",[11,1168,1169],{},"そもそも音程って何？",[24,1171,1172,1175,1182,1187],{"by":32},[11,1173,1174],{},"あー、それね。音程っていうのは、ふたつの音の高さの距離のことなんだ。",[11,1176,1177,1178,505,1180,275],{},"たとえばこれ — ",[68,1179,70],{},[68,1181,117],{},[99,1183],{"gap":1184,"highlight":511,"label":1185,"markings":1186,"notes":511,"octaves":648,"start-octave":104},"0.5","C → G","C#4:1,D4:2,D#4:3,E4:4,F4:5,F#4:6,G4:7",[11,1188,1189,1190,1193],{},"鳴らしても、見ても、二つの音が「離れてる」のがわかるよね。その ",[15,1191,1192],{},"離れ方の大きさそのもの"," を、音程って呼ぶんだ。",[24,1195,1196],{"by":26},[11,1197,1198],{},"ふーん、距離か。",[20,1200,1202],{"id":1201},"距離が同じなら同じ音程","距離が同じなら、同じ音程",[24,1204,1205],{"by":26},[11,1206,1207],{},"別の音から始めても、「同じ離れ方」って成り立つ？",[24,1209,1210,1213,1217],{"by":32},[11,1211,1212],{},"ちょっと聞いてみようか。",[99,1214],{"gap":1184,"highlight":645,"label":1215,"markings":1216,"notes":645,"octaves":648,"start-octave":104},"C → E","C#4:1,D4:2,D#4:3,E4:4",[99,1218],{"gap":1184,"highlight":1219,"label":1220,"markings":1221,"notes":1219,"octaves":648,"start-octave":104},"D4,F#4","D → F#","D#4:1,E4:2,F4:3,F#4:4",[24,1223,1224,1227],{"by":26},[11,1225,1226],{},"……あ、似てる。同じ「離れ方」の感じ。",[11,1228,1229],{},"でもこれって、高さの差を引き算するみたいな話？",[24,1231,1232,1235],{"by":32},[11,1233,1234],{},"あ、それはね、引き算じゃなくて、鍵盤の白＋黒の数で見るんだよ。",[11,1236,1237,1239,1240,1242,1243,1239,1245,1247],{},[68,1238,70],{}," → ",[68,1241,114],{}," も ",[68,1244,657],{},[68,1246,922],{}," も、半音4つぶん。だから「同じ音程」って言えるんだ。",[24,1249,1250],{"by":26},[11,1251,1252],{},"ああ、鍵盤で数えるのか。",[235,1254,1256],{"label":726,"suffix":801,"title":1255,"value":104},"同じ離れ方 = 同じ音程",[11,1257,1258],{},"鍵盤の白＋黒で半音4つぶん。C→E も D→F# も、始まる音が違っても距離は同じ。だから同じ音程として扱う。",[20,1260,1262],{"id":1261},"音程ズレてるってほんとは","「音程ズレてる」って、ほんとは……？",[24,1264,1265,1268],{"by":26},[11,1266,1267],{},"……じゃあちょっと待って。「音程ズレてる」って言われたんだけど、それ、変じゃない？",[11,1269,1270],{},"私が外したのは一個の音でしょ。",[24,1272,1273,1280],{"by":32},[11,1274,1275,1276,1279],{},"そう、そこなんだよね。厳密にはそれ、",[15,1277,1278],{},"音高（おんこう）"," のほう。音そのものの高さのこと。",[11,1281,1282],{},"音程は「二つの音の関係」のことだから、ひとつだけだとズレようがないんだよね。",[24,1284,1285],{"by":26},[11,1286,1287],{},"じゃあ私が言われたのは「音高がズレてる」が正しいわけか。",[24,1289,1290],{"by":32},[11,1291,1292],{},"うん、ふだんは混ぜて使われるけどね。でも区別がつくと、音楽の話がぐっと見やすくなるんだよ。",[24,1294,1295],{"by":26},[11,1296,1297],{},"覚えとく。",[548,1299,1300,1309,1324],{},[551,1301,1303,1306],{"question":1302},"音程って、いつ使うの？和音？メロディ？",[11,1304,1305],{},"両方だよ。和音は音程を縦に積んだもの（三和音）、メロディは音程を横につないだもの（スケール）。",[11,1307,1308],{},"どっちにしても、出てくる音と音の関係を語るのが音程なんだ。",[551,1310,1312,1315],{"question":1311},"音程と「度数」って違うもの？",[11,1313,1314],{},"度数は音程の「数え方」の一部だよ。半音いくつ離れてるかを「2度」「3度」みたいな単位で表したもの。",[11,1316,1317,1318,1323],{},"音程＝距離そのもの、度数＝その距離の呼び方、というイメージかな（→ ",[1319,1320,1322],"a",{"href":1321},"\u002Fdegree","度数","）。",[551,1325,1327,1336],{"question":1326},"オクターブ違いの音も「音程」あるの？",[11,1328,1329,1330,505,1333,1335],{},"あるよ。:note",[503,1331,1332],{},"C4",[68,1334,709],{}," は「8度（オクターブ）」って呼ぶ音程の関係。",[11,1337,1338],{},"名前は同じ C でも高さは違うから、距離はゼロじゃないんだ。",{"title":37,"searchDepth":38,"depth":38,"links":1340},[1341,1342],{"id":1201,"depth":38,"text":1202},{"id":1261,"depth":38,"text":1262},[595],"音楽において「音程（インターバル）」とは、ふたつの音の高さの距離のこと。鳴らして、聴いて、その「離れ方」を確かめる。",{},"\u002Fnodes\u002Finterval",[1348,1350],{"to":852,"by":32,"text":1349},"音と音の話に入る前に、まず「音の名前」を押さえておくと話が早いんだ。CDE で進めるからね。",{"to":601,"by":32,"text":1351},"音程の「距離」を別の数え方で見るのが「度」だよ。半音いくつ離れてるかと、何度離れてるか。両方つかうと話が早いんだ。",{"prerequisite":1353,"extends":1354},[852],[601,142,860],{"title":1159,"description":37},"nodes\u002Finterval",[612,595],"Intervals","2qchtSbPyRxo_HuWPmZ25ZLI4OXc-atNmgYMstg9ApM",{"id":1361,"title":1362,"body":1363,"description":37,"domains":1598,"draft":44,"extension":45,"lead":1599,"meta":1600,"navigation":48,"path":1601,"relatedNotes":1602,"relations":1610,"seo":1613,"stem":1614,"tags":1615,"titleEn":1616,"__hash__":1617},"nodes\u002Fnodes\u002Fnote-name.md","ドレミと CDE、音の名前",{"type":8,"value":1364,"toc":1594},[1365,1378,1394,1399,1412,1417,1426,1430,1435,1486,1491,1509,1514,1523,1527,1532,1549,1554,1569,1574],[24,1366,1367],{"by":26},[11,1368,1369,1370,1372,1373,1372,1375,1377],{},"ね、楽譜とかコードのところで ",[68,1371,70],{}," とか ",[68,1374,657],{},[68,1376,114],{}," って文字よく見るんだけど、ドとかレとかとは別物？",[24,1379,1380,1383],{"by":32},[11,1381,1382],{},"あー、それね。同じものを違う書き方してるだけなんだ。",[11,1384,1385,1386,1388,1389,1391,1392,275],{},"ド = ",[68,1387,70],{},"、レ = ",[68,1390,657],{},"、ミ = ",[68,1393,114],{},[24,1395,1396],{"by":26},[11,1397,1398],{},"あ、対応してるんだ。",[24,1400,1401,1404,1409],{"by":32},[11,1402,1403],{},"うん。鍵盤の白鍵に、ドレミの7音と、CDEFGAB の7文字が、それぞれ1対1で割り当てられてる。",[99,1405],{"gap":649,"label":1406,"notes":1407,"octaves":648,"start-octave":104,"markings":1408},"ド → レ → ミ → ファ → ソ → ラ → シ","C4,D4,E4,F4,G4,A4,B4","C4:ド,D4:レ,E4:ミ,F4:ファ,G4:ソ,A4:ラ,B4:シ",[11,1410,1411],{},"英語圏（と理論書）では CDEFGAB を使う。日本では日常的にはドレミ、楽譜やコード表記では CDE をよく使うんだよね。",[24,1413,1414],{"by":26},[11,1415,1416],{},"両方おぼえないといけないのか……。",[24,1418,1419],{"by":32},[11,1420,1421,1422,1425],{},"慣れたら自然に切り替わるよ。基本は ",[15,1423,1424],{},"同じ場所を指してるだけ"," っていう感覚で OK。",[20,1427,1429],{"id":1428},"黒鍵にはかを足す","黒鍵には「♯」か「♭」を足す",[24,1431,1432],{"by":26},[11,1433,1434],{},"ちょっと、白鍵だけ7文字って、黒鍵には名前ないの？",[24,1436,1437,1448,1454,1479],{"by":32},[11,1438,1439,1440,1443,1444,1447],{},"あ、あるよ。黒鍵には、隣の白鍵の名前に ",[15,1441,1442],{},"♯（シャープ）"," か ",[15,1445,1446],{},"♭（フラット）"," を足して呼ぶんだ。",[99,1449],{"gap":649,"label":1450,"notes":1451,"octaves":648,"start-octave":104,"markings":1452,"highlight":1453},"C → C♯ → D","C4,C#4,D4","C4:1,C#4:2,D4:3","C#4",[11,1455,1456,505,1458,1460,1461,1464,1465,1470,1471,1464,1474,275],{},[68,1457,70],{},[68,1459,657],{}," の間の黒鍵は、C から見て ",[15,1462,1463],{},"半音上"," だから ",[15,1466,1467],{},[68,1468,1469],{},"C#","、D から見て ",[15,1472,1473],{},"半音下",[15,1475,1476],{},[68,1477,1478],{},"Db",[11,1480,1481,1482,1485],{},"つまり、同じ鍵盤に ",[15,1483,1484],{},"2つの名前"," がある。",[24,1487,1488],{"by":26},[11,1489,1490],{},"え、同じものに2つも名前があるの？まぎらわしくない？",[24,1492,1493,1496],{"by":32},[11,1494,1495],{},"うん、ちょっと不思議だよね。でも文脈で使い分けるんだ。",[11,1497,1498,1500,1501,1503,1504,1500,1506,1508],{},[68,1499,70],{}," を基準にしてる話なら ",[68,1502,1469],{}," を使うし、:note",[503,1505,657],{},[68,1507,1478],{}," を使う。",[24,1510,1511],{"by":26},[11,1512,1513],{},"へえ、まわりの音との関係で決まるんだ。",[235,1515,1520],{"label":1516,"suffix":1517,"title":1518,"value":1519},"Note Name","名","白鍵7文字＋黒鍵に ♯／♭","7 + 2",[11,1521,1522],{},"音名は CDEFGAB の7文字（白鍵）が基本。黒鍵は隣の白鍵に ♯（半音上）か ♭（半音下）を足して呼ぶ。同じ黒鍵に2つの名前がつく。",[20,1524,1526],{"id":1525},"_7文字でひと回り次のオクターブ","7文字でひと回り、次のオクターブ",[24,1528,1529],{"by":26},[11,1530,1531],{},"じゃあ、B（シ）の次はどうなるの？8文字目があるの？",[24,1533,1534,1537,1542],{"by":32},[11,1535,1536],{},"ううん、B の次はまた C に戻る。鍵盤を右に進むと、CDEFGAB CDEFGAB …… と、7文字がぐるぐるくり返す。",[99,1538],{"gap":1539,"label":1540,"notes":1541,"octaves":103,"start-octave":104},"0.2","2オクターブぶん","C4,D4,E4,F4,G4,A4,B4,C5,D5,E5,F5,G5,A5,B5",[11,1543,1544,1545,1548],{},"ひとまわりぶんの距離を「",[15,1546,1547],{},"オクターブ","」って呼ぶよ。",[24,1550,1551],{"by":26},[11,1552,1553],{},"同じ名前が、高さ違いでくり返してるんだ。",[24,1555,1556],{"by":32},[11,1557,1558,1559,1561,1562,1565,1566,1568],{},"うん。同じ ",[68,1560,70],{}," でも、低い ",[68,1563,1564],{},"C3"," と、高い ",[68,1567,709],{}," はオクターブ違いの仲間。",[24,1570,1571],{"by":26},[11,1572,1573],{},"ふーん、文字は12個もいらなくて、7文字でやりくりしてるのか。",[548,1575,1576,1582,1588],{},[551,1577,1579],{"question":1578},"なぜドレミと CDE の2つがあるの？",[11,1580,1581],{},"歴史的な経緯だよ。ドレミ系（イタリア語起源）は歌う時に使われ、CDE系（英語）は楽譜やコードの表記で使われることが多い。指してる音は同じ。",[551,1583,1585],{"question":1584},"ドイツ語の H って聞いたことあるけど？",[11,1586,1587],{},"ドイツ語圏では B のことを H と書くんだ（紛らわしいけど）。日常的には CDE 系で読めば困らないよ。",[551,1589,1591],{"question":1590},"日本語の「ハニホヘト」は？",[11,1592,1593],{},"日本古来の音名で、C=ハ、D=ニ、E=ホ、F=ヘ、G=ト、A=イ、B=ロ。「ハ長調」の「ハ」は C のことだよ。",{"title":37,"searchDepth":38,"depth":38,"links":1595},[1596,1597],{"id":1428,"depth":38,"text":1429},{"id":1525,"depth":38,"text":1526},[595],"「ド・レ・ミ」と「C・D・E」、書き方は違うけど、指してるものは同じ。音の名前のつけ方の話。",{},"\u002Fnodes\u002Fnote-name",[1603,1606,1608],{"to":1604,"by":26,"text":1605},"note-name-history","なんで同じ音に2つも名前があるの？って気になった人はこっち。歴史の話。",{"to":855,"by":32,"text":1607},"音の名前がわかったら、次は「音と音の関係」をつかむといい流れになるよ。",{"to":601,"by":32,"text":1609},"名前を使って「何度離れてる？」を数えるのが「度」の話。CDE で考えると速いんだ。",{"prerequisite":1611,"extends":1612},[],[855,601,1604],{"title":1362,"description":37},"nodes\u002Fnote-name",[612,595],"Note Names","dHfeNlFrDd0-dCeKT5gKyMn8whBZDqNcrNvBVGqfel4",{"id":1619,"title":1620,"body":1621,"description":37,"domains":2126,"draft":44,"extension":45,"lead":2127,"meta":2128,"navigation":48,"path":2129,"relatedNotes":2130,"relations":2133,"seo":2136,"stem":2137,"tags":2138,"titleEn":2140,"__hash__":2141},"nodes\u002Fnodes\u002Fnote-name-history.md","ドレミと CDE はどこから来たのか",{"type":8,"value":1622,"toc":2120},[1623,1637,1646,1651,1666,1670,1678,1683,1694,1699,1735,1740,1743,1752,1757,1773,1778,1887,1892,1932,1937,1945,1948,1953,1965,1970,2000,2005,2017,2022,2037,2041,2046,2065,2070,2078],[24,1624,1625,1634],{"by":26},[11,1626,1627,1628,1630,1631,1633],{},"ね、前のページで ",[68,1629,70],{}," = ド、 ",[68,1632,657],{}," = レ……って同じ音に2つの名前があるって話だったよね。なんでわざわざ2つあるんだろう？混乱しない？",[11,1635,1636],{},"混乱した方を消せばよかったのに。",[24,1638,1639],{"by":32},[11,1640,1641,1642,1645],{},"あー、それはそうなんだけど、実は ",[15,1643,1644],{},"別々の場所で、別々の目的のために"," つくられたものが、たまたま両方残ってるっていうのが正直なところなんだ。",[24,1647,1648],{"by":26},[11,1649,1650],{},"別々の目的？",[24,1652,1653,1655],{"by":32},[11,1654,539],{},[11,1656,1657,1658,1661,1662,1665],{},"ざっくり言うと、CDE は「",[15,1659,1660],{},"書くため","」の名前で、ドレミは「",[15,1663,1664],{},"歌うため","」の名前として生まれたんだよ。",[20,1667,1669],{"id":1668},"cde-のほうが先","CDE のほうが先",[24,1671,1672,1675],{"by":32},[11,1673,1674],{},"順番でいうと、CDE のほうが古い。",[11,1676,1677],{},"古代ギリシャまでさかのぼると、音にギリシャ文字を当てて記録してたんだ。それがローマ時代にラテン文字に置き換わって、6世紀ごろにはもう A〜G の7文字で音を表す習慣ができてた。",[24,1679,1680],{"by":26},[11,1681,1682],{},"6世紀って、めっちゃ昔だ。",[24,1684,1685,1691],{"by":32},[11,1686,525,1687,1690],{},[15,1688,1689],{},"音を紙に書いて記録する","ための道具として、文字を使うのは自然だよね。",[11,1692,1693],{},"楽譜が発達するにつれて、この A〜G がそのまま定着していった。今でも英語圏や理論書で CDE を使うのはこの流れ。",[24,1695,1696],{"by":26},[11,1697,1698],{},"あれ、でもなんで A じゃなくて C から始まるの？アルファベットなら A が最初じゃない？",[24,1700,1701,1704,1711,1716,1727,1732],{"by":32},[11,1702,1703],{},"ね、それ思うよね。",[11,1705,1706,1707,1710],{},"文字が当てられた当時、",[15,1708,1709],{},"A の音から始まるスケール","（今でいう A マイナー＝自然短音階）が基準だったんだ。だから A=A、B=B、…… と素直に並んだ。",[99,1712],{"label":1713,"notes":1714,"octaves":103,"start-octave":104,"gap":649,"highlight":1715},"A から数えると：A B C D E F G A","A4,B4,C5,D5,E5,F5,G5,A5","A4,A5",[11,1717,1718,1719,1722,1723,1726],{},"そのあと、時代が進んで「ドレミファソラシド」っぽい ",[15,1720,1721],{},"明るいスケール（メジャー）"," がよく使われるようになった。それが ",[15,1724,1725],{},"C から始まるとちょうど黒鍵を使わない"," ことに気づくんだ。",[99,1728],{"label":1729,"notes":1730,"octaves":103,"start-octave":104,"gap":649,"highlight":1731},"C から数えると：白鍵だけで1オクターブ","C4,D4,E4,F4,G4,A4,B4,C5","C4,C5",[11,1733,1734],{},"つまり「文字の起源は A だけど、説明しやすいキーは C」っていう、ちょっとねじれた状態が残ったまま今に至るんだ。",[24,1736,1737],{"by":26},[11,1738,1739],{},"へえ。文字は A スタートだけど、よく使うキーは C スタート、って2つのものさしが並走してる感じ。",[20,1741,1742],{"id":1742},"ドレミは修道院で生まれた",[24,1744,1745],{"by":32},[11,1746,1747,1748,1751],{},"じゃあドレミの話。これは ",[15,1749,1750],{},"11世紀のイタリアの修道院"," で生まれたんだ。",[24,1753,1754],{"by":26},[11,1755,1756],{},"修道院。意外な場所だ。",[24,1758,1759,1762],{"by":32},[11,1760,1761],{},"当時、修道士たちは聖歌を覚えるのが大変で、「メロディを耳で覚えるのにいい方法ない？」って話になってた。",[11,1763,1764,1765,1768,1769,1772],{},"そこで ",[15,1766,1767],{},"グイード・ダレッツォ"," っていう音楽教師が、ある聖歌を持ち出した。「",[15,1770,1771],{},"ウト・クェアント・ラクシス","」って讃美歌で、ちょうど各行の最初の音が、1段ずつ階段みたいに上がっていく曲だったんだよ。",[99,1774],{"label":1775,"notes":1776,"octaves":648,"start-octave":104,"gap":175,"markings":1777},"各行の出だしの音だけ並べると","C4,D4,E4,F4,G4,A4","C4:Ut,D4:Re,E4:Mi,F4:Fa,G4:Sol,A4:La",[24,1779,1780,1787,1790,1880],{"by":32},[11,1781,1782,1783,1786],{},"グイードは「",[15,1784,1785],{},"この曲の各行の最初の音節を、音の名前にしちゃえばいい","」って考えた。",[11,1788,1789],{},"歌詞の最初の音節を順番にとると：",[389,1791,1792,1805],{},[392,1793,1794],{},[395,1795,1796,1799,1802],{},[398,1797,1798],{},"歌詞の始まり",[398,1800,1801],{},"音節",[398,1803,1804],{},"音",[410,1806,1807,1819,1831,1843,1856,1868],{},[395,1808,1809,1815,1817],{},[415,1810,1811,1814],{},[15,1812,1813],{},"Ut"," queant laxis",[415,1816,1813],{},[415,1818,70],{},[395,1820,1821,1827,1829],{},[415,1822,1823,1826],{},[15,1824,1825],{},"Re","sonare fibris",[415,1828,1825],{},[415,1830,657],{},[395,1832,1833,1839,1841],{},[415,1834,1835,1838],{},[15,1836,1837],{},"Mi","ra gestorum",[415,1840,1837],{},[415,1842,114],{},[395,1844,1845,1851,1853],{},[415,1846,1847,1850],{},[15,1848,1849],{},"Fa","muli tuorum",[415,1852,1849],{},[415,1854,1855],{},"F",[395,1857,1858,1864,1866],{},[415,1859,1860,1863],{},[15,1861,1862],{},"Sol","ve polluti",[415,1865,1862],{},[415,1867,117],{},[395,1869,1870,1876,1878],{},[415,1871,1872,1875],{},[15,1873,1874],{},"La","bii reatum",[415,1877,1874],{},[415,1879,927],{},[11,1881,1882,1883,1886],{},"これで、歌詞を覚えてるとメロディも芋づる式に出てくる、っていう ",[15,1884,1885],{},"記憶のフック"," ができた。",[24,1888,1889],{"by":26},[11,1890,1891],{},"あー、それは便利。",[24,1893,1894,1901,1904,1925],{"by":32},[11,1895,1896,1897,1900],{},"6音だから「",[15,1898,1899],{},"ヘクサコード（hexachord）","」って呼ばれた。これがドレミの原型。",[11,1902,1903],{},"時代が下って、",[219,1905,1906,1916],{},[222,1907,1908,1911,1912,1915],{},[15,1909,1910],{},"7音目"," が必要になって ",[15,1913,1914],{},"Si（後の Ti）"," が足された",[222,1917,1918,1920,1921,1924],{},[15,1919,1813],{}," は発音しにくいから ",[15,1922,1923],{},"Do"," に置き換わった（17世紀、イタリア）",[11,1926,1927,1928,1931],{},"それで ",[15,1929,1930],{},"Do Re Mi Fa Sol La Si (Ti)"," が今のかたちで定着した。",[24,1933,1934],{"by":26},[11,1935,1936],{},"へえ、修道院の暗記ツールが、いま小学校の音楽の教科書に載ってるってことか。",[235,1938,1942],{"label":1939,"suffix":37,"title":1940,"value":1941},"Origin","文字は記録、ドレミは記憶","2 源流",[11,1943,1944],{},"CDE は古代〜中世ヨーロッパで「音を書き残すため」の名前として定着。ドレミは11世紀の修道院で「歌を覚えるため」の名前として生まれた。出発点も目的も別。",[20,1946,1947],{"id":1947},"なぜ両方が日本に残ったか",[24,1949,1950],{"by":26},[11,1951,1952],{},"で、なんで日本ではどっちも使われてるの？",[24,1954,1955,1962],{"by":32},[11,1956,1957,1958,1961],{},"これも経緯があって、明治時代にヨーロッパ音楽が入ってきたとき、",[15,1959,1960],{},"学校教育用の音楽"," はイタリア・フランス由来のドレミで導入されたんだ。",[11,1963,1964],{},"子どもに歌わせるのに「ド・レ・ミ」のほうが自然だったし、ヨーロッパでも学校音楽はドレミでやってたから、それをそのまま輸入した。",[24,1966,1967],{"by":26},[11,1968,1969],{},"じゃあ CDE は？",[24,1971,1972,1979,1982,1986,1989,1997],{"by":32},[11,1973,1974,1975,1978],{},"こっちは戦後、",[15,1976,1977],{},"ジャズやポップス"," がアメリカから入ってきたときに一緒に来た。コードネームを書くには CDE のほうが圧倒的に短くて便利なんだ。",[11,1980,1981],{},"「Cmaj7」って書くのと「ハ長調セブンス」って書くのとどっちが楽？って話。",[99,1983],{"label":1984,"notes":1985,"octaves":103,"start-octave":104,"highlight":1985,"duration":105},"Cmaj7","C4,E4,G4,B4",[11,1987,1988],{},"だから日本では：",[219,1990,1991,1994],{},[222,1992,1993],{},"学校の音楽 → ドレミ",[222,1995,1996],{},"バンドのコード譜・楽器の教則本 → CDE",[11,1998,1999],{},"って棲み分けができたまま、両方が残ったんだ。",[24,2001,2002],{"by":26},[11,2003,2004],{},"ふーん、来たルートが違うから両方残ったのか。",[24,2006,2007,2010],{"by":32},[11,2008,2009],{},"そういうこと。",[11,2011,2012,2013,2016],{},"ちなみに ",[15,2014,2015],{},"ハニホヘト"," っていう日本独自の音名もあるよ。明治のころに作られた、CDE の和訳みたいなやつ。",[24,2018,2019],{"by":26},[11,2020,2021],{},"ハニホヘト。聞いたことはある。",[24,2023,2024,2027],{"by":32},[11,2025,2026],{},"ハ＝C、ニ＝D、ホ＝E、ヘ＝F、ト＝G、イ＝A、ロ＝B。",[11,2028,2029,2030,2033,2034,2036],{},"「",[15,2031,2032],{},"ハ長調","」って言うのは「",[15,2035,102],{},"」のこと。クラシック系の楽譜やラジオ番組で今も使われてるよ。",[20,2038,2040],{"id":2039},"つまり使い分けじゃなくて文化の重なり","つまり「使い分け」じゃなくて「文化の重なり」",[24,2042,2043],{"by":26},[11,2044,2045],{},"どっちで覚えたらいい、とかある？",[24,2047,2048,2055,2058],{"by":32},[11,2049,2050,2051,2054],{},"答えは「",[15,2052,2053],{},"両方なんとなく"," で OK」だよ。",[11,2056,2057],{},"歌うときや音感の話ではドレミが速いし、コードを書くときや理論で考えるときは CDE が速い。",[11,2059,2060,2061,2064],{},"無理に統一しようとせず、",[15,2062,2063],{},"場面に応じて切り替わるものなんだ"," と思っておけば、迷わなくなる。",[24,2066,2067],{"by":26},[11,2068,2069],{},"混乱した方を消す、じゃなくて、両方の生まれた背景を知ったら、なんかどっちも消しがたい気がしてきた。",[24,2071,2072,2075],{"by":32},[11,2073,2074],{},"1000年かけて積み上がったものだからね。",[11,2076,2077],{},"歌の覚え方として生まれたドレミと、書き残すために生まれた CDE。両方の役割が今も残ってる、ってだけの話。",[548,2079,2080,2094,2104],{},[551,2081,2083],{"question":2082},"ドイツ語の H って何？",[11,2084,2085,2086,2089,2090,2093],{},"ドイツ語圏では、B のことを ",[15,2087,2088],{},"H","、B♭ のことを ",[15,2091,2092],{},"B"," と書くんだ。中世の写本で b の文字に2つの形（角ばった b と丸い b）があったのが、それぞれ独立した記号に分かれて H と B になった、っていう書き文字由来の歴史。",[551,2095,2097],{"question":2096},"フランス語の Si と英語の Ti は同じもの？",[11,2098,2099,2100,2103],{},"そう、同じ7番目の音（B）を指す。イタリア語・フランス語では Si、英語圏ではドレミを教える時に Ti を使う。これは「",[15,2101,2102],{},"頭文字がかぶらないように","」(Sol と Si が両方 S で始まる）変えた、っていう実用的な理由。",[551,2105,2107],{"question":2106},"ドレミは「動く」って聞いたけど？",[11,2108,2029,2109,2112,2113,2116,2117,2119],{},[15,2110,2111],{},"移動ド","」と「",[15,2114,2115],{},"固定ド","」っていう2つの考え方がある。固定ドは ",[68,2118,70],{}," = 常に「ド」。移動ドはキーの主音をドと呼ぶ（G メジャーなら G がド）。日本の学校では固定ドが多いけど、ソルフェージュ訓練では移動ドを使うこともある。これはまた別の長い話。",{"title":37,"searchDepth":38,"depth":38,"links":2121},[2122,2123,2124,2125],{"id":1668,"depth":38,"text":1669},{"id":1742,"depth":38,"text":1742},{"id":1947,"depth":38,"text":1947},{"id":2039,"depth":38,"text":2040},[1142],"同じ音なのに2つの名前がある理由は、別々の場所で別々の目的のために生まれた2つの記譜文化が、日本でたまたま両方残ったから。",{},"\u002Fnodes\u002Fnote-name-history",[2131],{"to":852,"by":32,"text":2132},"「2つあるんだ」までは前の記事で。ここはその続き、なんでそうなったかの話。",{"prerequisite":2134,"extends":2135},[852],[],{"title":1620,"description":37},"nodes\u002Fnote-name-history",[612,2139,1142],"History","Where Note Names Come From","-knTC8P6BRZZcT0FDW0PnRf4dKSzfTvb6SOc5LjWUq8",{"id":2143,"title":2144,"body":2145,"description":2149,"domains":2297,"draft":44,"extension":45,"lead":2298,"meta":2299,"navigation":48,"path":2300,"relatedNotes":50,"relations":50,"seo":2301,"stem":2302,"tags":2303,"titleEn":2304,"__hash__":2305},"nodes\u002Fnodes\u002Fprivacy.md","プライバシーポリシー",{"type":8,"value":2146,"toc":2285},[2147,2150,2154,2157,2162,2165,2169,2172,2183,2193,2197,2243,2252,2255,2258,2267,2270,2273,2276,2279,2282],[11,2148,2149],{},"このページは、Ring Rong（以下「当サイト」）が利用者の情報をどのように扱うかを記載しています。",[20,2151,2153],{"id":2152},"アクセス解析行動分析について","アクセス解析・行動分析について",[11,2155,2156],{},"当サイトでは、サイトの改善のために以下のアクセス解析・行動分析サービスを利用しています。これらのサービスは Cookie および類似の技術を使用して、訪問者のページ閲覧・操作に関する匿名のデータを収集します。個人を特定する情報（氏名・メールアドレス等）は収集していません。",[2158,2159,2161],"h3",{"id":2160},"cloudflare-web-analytics","Cloudflare Web Analytics",[11,2163,2164],{},"ページビューや国別の集計などの基本的なトラフィック解析に利用しています。Cookie を使用しない仕組みです。",[2158,2166,2168],{"id":2167},"microsoft-clarity","Microsoft Clarity",[11,2170,2171],{},"ユーザーがサイトをどのように利用しているかを理解し、UI を改善するために利用しています。Clarity は以下を取得します。",[219,2173,2174,2177,2180],{},[222,2175,2176],{},"ページ内でのクリック・タップ・スクロールの位置",[222,2178,2179],{},"セッション内の操作の再生（録画）",[222,2181,2182],{},"ヒートマップ・ページ内エンゲージメント指標",[11,2184,2185,2186,2192],{},"Clarity が収集するデータは Microsoft 社のサーバーに送信・保管されます。詳細は ",[1319,2187,2191],{"href":2188,"rel":2189},"https:\u002F\u002Fprivacy.microsoft.com\u002Fja-jp\u002Fprivacystatement",[2190],"nofollow","Microsoft プライバシーステートメント"," を参照してください。",[2158,2194,2196],{"id":2195},"外部送信される情報について電気通信事業法","外部送信される情報について（電気通信事業法）",[389,2198,2199,2215],{},[392,2200,2201],{},[395,2202,2203,2206,2209,2212],{},[398,2204,2205],{},"サービス",[398,2207,2208],{},"送信先",[398,2210,2211],{},"送信される情報",[398,2213,2214],{},"目的",[410,2216,2217,2230],{},[395,2218,2219,2221,2224,2227],{},[415,2220,2161],{},[415,2222,2223],{},"Cloudflare, Inc.（米国）",[415,2225,2226],{},"アクセス日時、リファラー、利用ブラウザ等の匿名集計データ",[415,2228,2229],{},"サイトアクセス解析",[395,2231,2232,2234,2237,2240],{},[415,2233,2168],{},[415,2235,2236],{},"Microsoft 社（米国）",[415,2238,2239],{},"ページ内操作（クリック・スクロール等）、セッション録画データ",[415,2241,2242],{},"UI 改善のための行動分析",[11,2244,2245,2246,2251],{},"Cookie の取得・利用を拒否したい場合は、ブラウザの Cookie 設定で無効化してください。Clarity については ",[1319,2247,2250],{"href":2248,"rel":2249},"https:\u002F\u002Fclarity.microsoft.com\u002F",[2190],"Clarity オプトアウト"," からも拒否設定が可能です。",[20,2253,2254],{"id":2254},"広告配信について",[11,2256,2257],{},"当サイトでは将来的に、Google AdSense などの第三者配信の広告サービスを利用する場合があります。第三者配信事業者は Cookie を使用して、ユーザーのアクセスに関する情報に基づいて、適切な広告を表示します。",[11,2259,2260,2261,2266],{},"Google による Cookie の使用を無効にするには、 ",[1319,2262,2265],{"href":2263,"rel":2264},"https:\u002F\u002Fwww.google.com\u002Fsettings\u002Fads",[2190],"広告設定"," ページにアクセスしてください。",[20,2268,2269],{"id":2269},"著作権について",[11,2271,2272],{},"当サイトに掲載されている文章・図版・コードは、引用や私的利用の範囲を超える場合、事前にご連絡ください。",[20,2274,2275],{"id":2275},"免責事項",[11,2277,2278],{},"当サイトに掲載する内容については正確性に努めていますが、その内容の正確性・安全性を保証するものではありません。当サイトの利用によって生じたいかなる損害についても、当サイトは責任を負いません。",[20,2280,2281],{"id":2281},"プライバシーポリシーの変更について",[11,2283,2284],{},"当サイトは、必要に応じて本ポリシーを変更することがあります。重要な変更がある場合は、当ページにて告知します。",{"title":37,"searchDepth":38,"depth":38,"links":2286},[2287,2293,2294,2295,2296],{"id":2152,"depth":38,"text":2153,"children":2288},[2289,2291,2292],{"id":2160,"depth":2290,"text":2161},3,{"id":2167,"depth":2290,"text":2168},{"id":2195,"depth":2290,"text":2196},{"id":2254,"depth":38,"text":2254},{"id":2269,"depth":38,"text":2269},{"id":2275,"depth":38,"text":2275},{"id":2281,"depth":38,"text":2281},[43],"Ring Rong のアクセス解析・行動分析・広告配信・Cookie の利用について。",{},"\u002Fnodes\u002Fprivacy",{"title":2144,"description":2149},"nodes\u002Fprivacy",[54],"Privacy Policy","M6MItnYl4u0S84_pb2vSgSnR8NXzWiHdt0tdt1Fa1DI",{"id":2307,"title":2308,"body":2309,"description":2313,"domains":2428,"draft":44,"extension":45,"lead":2429,"meta":2430,"navigation":48,"path":2431,"relatedNotes":50,"relations":50,"seo":2432,"stem":2433,"tags":2434,"titleEn":2436,"__hash__":2437},"nodes\u002Fnodes\u002Ftest.md","テスト記事",{"type":8,"value":2310,"toc":2417},[2311,2314,2326,2330,2336,2343,2350,2354,2357,2361,2364,2366,2369,2373,2376,2379,2381,2384,2391,2394,2398,2401,2404,2407,2411,2415],[11,2312,2313],{},"これは smoke test 用の最初の記事です。",[11,2315,2316,2317,2321,2322,2325],{},"ファイル名 ",[2318,2319,2320],"code",{},"test.md"," がそのまま URL ",[2318,2323,2324],{},"\u002Ftest"," になります。",[20,2327,2329],{"id":2328},"playbutton-の動作確認","PlayButton の動作確認",[11,2331,2332,2333],{},"C メジャー三和音： ",[2334,2335],"play-button",{"label":102,"notes":101},[11,2337,2338,2339],{},"セブンスコード： ",[2334,2340],{"label":2341,"notes":2342},"C7（MIDI番号指定）","60,64,67,70",[11,2344,2345,2346],{},"単音： ",[2334,2347],{"label":2348,"notes":2349,"duration":1184},"A4 単音","A4",[20,2351,2353],{"id":2352},"keyboard-の動作確認","Keyboard の動作確認",[11,2355,2356],{},"2 オクターブの普通の鍵盤：",[2358,2359],"keyboard",{"octaves":103,"start-octave":2360},"3",[11,2362,2363],{},"C メジャースケールをハイライト：",[2358,2365],{"octaves":648,"start-octave":104,"highlight":1407},[20,2367,2368],{"id":2368},"新機能の動作確認",[2158,2370,2372],{"id":2371},"サイズ違いxs-sm-md-lg","サイズ違い（xs \u002F sm \u002F md \u002F lg）",[2358,2374],{"octaves":648,"start-octave":104,"size":2375},"xs",[2358,2377],{"octaves":648,"start-octave":104,"size":2378},"sm",[2358,2380],{"octaves":648,"start-octave":104,"size":45},[2358,2382],{"octaves":648,"start-octave":104,"size":2383},"lg",[2158,2385,2387,2388],{"id":2386},"範囲指定-rangec4-g5","範囲指定 ",[2318,2389,2390],{},"range=\"C4-G5\"",[2358,2392],{"range":2393},"C4-G5",[2158,2395,2397],{"id":2396},"マーキング数字絵文字","マーキング（数字・絵文字）",[11,2399,2400],{},"C メジャー三和音にコード度数マーキング：",[2358,2402],{"octaves":648,"start-octave":104,"markings":2403},"C4:R,E4:3,G4:5",[11,2405,2406],{},"絵文字マーキング：",[2358,2408],{"markings":2409,"range":2410},"C4:1,E4:3,G4:5,C5:✨,A5:🎵","C4-A5",[2158,2412,2414],{"id":2413},"マーキング-ハイライト併用","マーキング + ハイライト併用",[2358,2416],{"octaves":648,"start-octave":104,"markings":2403,"highlight":101},{"title":37,"searchDepth":38,"depth":38,"links":2418},[2419,2420,2421],{"id":2328,"depth":38,"text":2329},{"id":2352,"depth":38,"text":2353},{"id":2368,"depth":38,"text":2368,"children":2422},[2423,2424,2426,2427],{"id":2371,"depth":2290,"text":2372},{"id":2386,"depth":2290,"text":2425},"範囲指定 range=\"C4-G5\"",{"id":2396,"depth":2290,"text":2397},{"id":2413,"depth":2290,"text":2414},[43],"smoke test 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