{"id":"player-piano-roll","no":424,"name":"Player Piano Roll","ja":"自動ピアノロール","era":"1896–1930s","family":"記譜の様式","kind":"スタイル","collection":"Dictionary expansion 21","addedAt":"2026-08-18","source":{"title":"The Pianola Institute","url":"https://www.pianola.org/"},"reference":{"status":"verified","pageUrl":"https://www.pianola.org/","credit":"The Pianola Institute","gallery":[{"imageUrl":"https://commons.wikimedia.org/wiki/Special:FilePath/PlayerPianoRoll.jpg?width=640","pageUrl":"https://commons.wikimedia.org/wiki/File:PlayerPianoRoll.jpg","credit":"自動ピアノのロール（CC BY-SA 4.0）"},{"imageUrl":"https://commons.wikimedia.org/wiki/Special:FilePath/Weltereproduktionsklavier.jpg?width=640","pageUrl":"https://commons.wikimedia.org/wiki/File:Weltereproduktionsklavier.jpg","credit":"ヴェルテの再生ピアノ（CC BY-SA 3.0）"}]},"essence":"紙に開けた穴が演奏そのものになる巻紙の記録メディア。人が読む楽譜から機械が読む符号への転換点で、パンチカードとデジタルシーケンサーの先祖にあたる。","cues":["穿孔の列","巻紙のスクロール","機械可読の音楽","演奏の物理的記録"],"intents":["技術","懐かしさ","遊び"],"works":["一次資料と代表作から成立条件を比較する","別媒体へ応用できる構成原理を取り出す"],"recipe":{"type":"参照作品の文字・記号・スケールを観察する","layout":"視線と情報を支配する構造を一つ抽出する","material":"時代・地域・制作工程に固有の素材と挙動を確認する"},"avoid":"表面的な記号へ還元せず、時代・地域・技術・制作主体の文脈を確認する。","colors":["#e9e6dd","#67635d","#171615"],"motif":"notation","pair":["barcode-qr","katagami"],"study":["ヴェルテ・ミニョン","ガーシュウィン自身のロール","MIDIへの系譜"],"en":{"essence":"The rolled paper medium on which punched holes are the performance itself. The turn from scores read by people to codes read by machines — ancestor of the punch card and the digital sequencer.","cues":["Rows of perforations","The scrolling roll","Machine-readable music","Performance physically recorded"],"works":["Comparing primary sources and canonical works","Extracting principles that transfer to other media"],"recipe":{"type":"Observe the letters, signs and scale of reference works","layout":"Extract the one structure that governs gaze and information","material":"Verify the materials and behaviors specific to era, region and process"},"avoid":"Don't reduce it to surface signs. Verify the context of era, region, technology and makers.","study":["the Welte-Mignon","Gershwin's own rolls","the lineage to MIDI"]}}