It's an app that lets you write chords and play them right back!
Use it for composing and arranging music, as well as for practicing singing, guitar, piano, etc.

Functions:
- Enter chords with the dedicated keyboard (including slash and tension chords)
- Control tempo, beat, and modulation
- Playback the entered chords
- Display chords as degree name (I, VI, ...)
- Save notes with name and description