Trumpet solo in A♭ major

The task

Compose a trumpet feature in Ab major, 140 BPM allegro, 4/4, about 64 bars and about three minutes, scored for trumpet, piano and bass in 3 voices. Texture: bright trumpet theme over a swinging rhythm section. Open with 4 bars of trumpet alone, then layer the other parts in one at a time. The main section runs on a…