[2][3] Beginning at the age of 10, he accompanied silent films on piano in movie theaters.
[4] In 1928, Allen moved to New York City, where he joined Herbert Cowans's band at the Rockland Palace.
Before long, he moved back to Ohio, where he played with saxophonist Alex Jackson in 1930.
He joined James P. Johnson's orchestra as the second pianist and then was a member of the Teddy Hill band.
In the 1940s he worked with Stuff Smith, Dizzy Gillespie, and became pianist for Slim & Slam.