CAB CALLOWAY - IT AIN'T NECESSARILY SO (LIVE ON THE ED SULLIVAN SHOW, JUNE 20, 1965) (It Ain't Necessarily So)br br Film Producer: Bob Prechtbr Film Director: Tim Kileybr Composer: George Gershwinbr Author: Ira Gershwinbr br © 2021 SOFA Entertainment, under exclusive license to Universal Music Enterprises, a division of UMG Recordings, Inc.