Louis Armstrong tours with the musical Hot Chocolate

After separating from Lil, Armstrong started to play at the Sunset Café for Al Capone's associate Joe Glaser in the Carroll Dickerson Orchestra, with Earl Hines on piano, which was soon renamed Louis Armstrong and his Stompers, though Hines was the music director and Glaser managed the orchestra. Hines and Armstrong became fast friends as well as successful collaborators.
Armstrong returned to New York, in 1929, where he played in the pit orchestra of the successful musical Hot Chocolate, an all-black revue written by Andy Razaf and pianist/composer Fats Waller. He also made a cameo appearance as a vocalist, regularly stealing the show with his rendition of "Ain't Misbehavin'", his version of the song becoming his biggest selling record to date.

http://en.wikipedia.org/wiki/Louis_Armstrong