Design a few sections — each a drum groove paired with a chord progression — then arrange them into a verse–chorus form and play the whole piece.
Each section has a groove, a progression and a length. Edit them to taste.
Tap a section to add it to the form. Tap a block in the form to remove it.
Most songs are a handful of sections in a deliberate order — an intro that sets up, verses that carry the story, a chorus that returns as the hook, maybe a contrasting bridge. The same few sections recur; arrangement is the art of when. Build the order here, then export the whole thing as MIDI to keep working on it elsewhere.