Brass quintet in A♭ major

The task

Compose a brass quintet in Ab major, 114 BPM moderato, 4/4, about 88 bars and about three and a half minutes, scored for brass quintet in 5 voices. Texture: trumpet lead, low brass on roots, inner voices filling harmony. Open with 4 bars of brass quintet alone, then layer the other parts in one at a time. The main…