This is the sy Oliver chart as done for Jimmie Lunceford in the late 30', but subsequently re-recorded by Sy Oliver with his band in the 40's, and Billy May for the Time Life swing series in the 60's/70s. It's a vocal where the band does most of the singing. Short tenor sax solo too, and lots of glissing trombones and plunger-waving trumpets in the shout chorus.