Music theory models in Dart
A Note is used to represent the relative duration and pitch of a sound.
The key of a piece is a group of pitches, or scale upon which a music composition is created in classical, Western art, and Western pop music.
In music theory, a chord is any harmonic set of three or more notes that is heard as if sounding simultaneously.
In music theory, a scale is any set of musical notes ordered by fundamental frequency or pitch.