Songwriters on Parade was a musical Vaudeville revue which featured hit songwriters of the day. It was considered one of the last Vaudevillian forays of this type. Between 1931 and 1940 (at least) various line-ups of popular songwriters would form a sensational act, performing their hits across the eastern seaboard on the Loew's and Keith Circuits.
Partial list of featured songwriters between 1931–1940
References
Songwriters on Parade Wikipedia(Text) CC BY-SA