Career

Cohn played in Chicago in the late 1920s, including in Jimmie Noone"s Apex Club Orchestra (1928-1930). He recorded with Noone extensively between 1929 and 1934, especially for Vocalion Records. Many of the tunes Noone recorded were written and/or arranged by Cohn, including "Apex Blues" (previously attributed to Earl Hines).

Cohn also recorded as a leader in the early 1930s, with a band that featured Leon Washington on tenor saxophone.

Cohn recorded with Frankie Franko & His Louisianans in 1930, and also accompanied blues singers such as Georgia White. Later in the 1930s Cohn led the Chicago musicians" union, and continued to play locally.