The Harlem Hamfats Biography (Wikipedia)
The Harlem Hamfats was a Chicago jazz band formed in 1936. Initially, they mainly provided backup music for jazz and blues singers, such as Johnny Temple, Rosetta Howard, and Frankie Jaxon, for Decca Records. Their first record, "Oh! Red", became a hit, securing them a Decca contract for fifty titles, and they launched a successful recording career performing danceable music.
The group's inclusion in the dirty blues genre is due to such songs as "Gimme Some of that Yum Yum" and "Let's Get Drunk and Truck".