Source of music21

[[Music]] > [[music21]] | [[MIT]]

- https://web.mit.edu/music21/doc/about/what.html

*. [#c764c91e]

- Pythonの音楽情報処理ライブラリmusic21の紹介
--  https://qiita.com/iNomaG/items/16081daf103a042ea0fe