Complex sentence: Together, Nat and Cannonball moved to New York to pursue their developing music careers, founding the Cannonball Adderley Quintet, a primarily bop group at the time, in 1956.
Split into simpler sentences: Together, Nat and Cannonball moved to New York to pursue their developing music careers. They created the Cannonball Adderley Quintet, a primarily bop group at the time, in 1956.