In 1946, he began playing piano in Billy Diamond’s band at the Hideaway Club. Diamond gave the 5 foot, 5 inch, 220-pound piano player the nickname "Fats." In 1949, Fats Domino signed a record deal with Dave Bartholomew at Imperial Records. His first single, "Fat Man," became an R&B hit song. This single was also considered one of the very first rock 'n' roll songs.