TODO

• save last used device id to local storage and restore if found
• configure piano roll min/max keys
• colour keys for a particular chord/key
• create a chord quiz based on lead sheets (chord names)
• show piano roll in lead sheet practice when incorrect (or toggled)
• create a chord quiz based on notation (treble / bass) for sight reading
• chord detection logic allows all inversions - this is incorrect in sheet music practice
• save/restore lead sheet settings
• show different inversions in sheet music practice
• support bass clef in practice notes?
• include player stats, with things like "daily streaks, high scores, etc"
• refactor $effect blocks in practice (move logic into midi context)
• fix inversions changing when sidebar toggled
• endless option for practice
• support key signatures in practice notes
  • (stave.setKeySignature; but will have to adjust the note names to be in the right key)
• gamify the practice sessions (remove countdown progress, but have score logarithmically decreasing)
• add "midi keyboard" shortcuts to move around the interface
• add keyboard shortcuts to move around the interface
• content for learning chords?