Freddie Slack was the pianist with Jimmy Dorsey's orchestra during part of the 1930s before becoming well known for playing boogie-woogie with Will Bradley's band, most notably on the hit "Beat Me Daddy, Eight to the Bar." In 1941 Slack went out on his own, forming a big band that soon signed with the Capitol label. His hit recording of "Cow Cow Boogie" in 1942 with singer Ella Mae Morse made him famous even though none of his other records caught on at the same level. Slack's orchestra just lasted two years and, although he had a new band during 1945-1946, many of his recordings were made with small groups.