Hawes was self-taught; by his teens he was playing with the leading jazz musicians on the West Coast, including Dexter Gordon, Wardell Gray, Art Pepper, Shorty Rogers, and Teddy Edwards. His second professional job, at 18, was playing for eight months with the Howard McGhee Quintet at the Hi De Ho Club, in a group that included Charlie Parker. By late 1947, Hawes' reputation was leading to studio recording work. Early studio dates included work for George L. "Happy" Johnson, Teddy Edwards, Sonny Criss, and Shorty Rogers. From 1948 to 1952, he was recorded live on several occasions at Los Angeles-area jazz clubs including The Haig, The Lighthouse, and The Surf Club. By December 1952, he had recorded eight songs under his own name for Prestige Records with a quartet featuring Larry Bunker on vibraphone.