After their annual free concert at Chicago's Dearborn Settlement, Benny Goodman and his band are packing up to go to their next engagement when a kid steals Goodman's clarinet. Goodman and Popsie pursue him to a tenement flat where he has led them to hear his brother play the trombone. Shenanigans ensue following Goodman's offering the brother a job with the band.
as Benny Goodman
as Trudy Wilson
as Popsy
as Pat Stirling
as Johnny Birch
as Lester Barnes
as Dixie Zang
as Skeets McCormick
as Military Cadet General 'Mogie' Cramichael
as Snub-Nosed Girl on Dance Floor (uncredited)