This medium tempo shuffle is a great feel good chart you'll really enjoy! The solo section has room for a written or improvised alto 1 solo over the rhythm section comping the 12 bar blues changes in Bb. The rhythm section drops out for a very cool, stop-time, call and response feature for brass and saxes.  The time starts again with a written or ad lib solo from trumpet 2 over the blues changes. The whole band returns on the melody as the tune builds to an exciting finale. Highly recommended!