A music app to write chord progressions, add simple drum beats and a little melody — to play, sing and perform along with your phone. Build a song from parts. Each part is made of measures, and for every measure you choose the chords and how they sound. Features: - Chords: pick from diatonic (step), dominant seventh and parallel chords - Strumming: set a strumming pattern per measure - Drums: add a simple drum beat to keep the groove - Melody: add a little melody line per measure - Play back your progression to sing and perform along - Compose a song made of progressions No account, no ads, no tracking.