After leaving the military, he played with Charlie Parker, Sonny Criss, Teddy Edwards, Hampton Hawes and other musicians who were in Los Angeles.

He then spent five years in San Francisco between 1948 and 1953, often appearing at the Bop City jazz club and working with Dexter Gordon, Wardell Gray, Billie Holiday and Sonny Clark.

[1] According to Roach, Morrow had been "free-lancing around San Francisco clubs" when they hired him after rejecting two other bassists.

He also worked with Anita O'Day in the 1970s before joining the Disney World house band in 1976.

With David Amram With Curtis Amy With Earl Anderza With Chet Baker With Clifford Brown With Clifford Brown and Max Roach With Max Roach With Sonny Rollins With Gene Russell With Sonny Stitt With Dinah Washington