Swing big band in B♭ major

The task

Compose a swing big-band chart in Bb major, 166 BPM allegro, 4/4, about 72 bars and about three minutes, scored for sax section, brass, piano, bass and drums in 6 voices. Texture: sectional brass and sax call-and-response over a swinging rhythm section. Open with 8 bars of sax section alone, then layer the other…