Backup diff of music21 (No. 1)

• Backup list
• View the diff current.
• View the diff for visual.
• View the source.
• View the backup.
• Go to music21.
  • 1 (2022-05-21 (Sat) 17:42:36)

• The added line is THIS COLOR.
• The deleted line is THIS COLOR.

[[Music]] > [[music]] | [[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