Robert Lockart received a BM in music theory with a performers certificate and MM from Eastman School in Jazz Studies, as well as attending the Banff School with Dave Holland, Kenny Wheeler, and David Liebman. As a performer he has played with the Woody Herman Orchestra, Tom Harrell Big Band, Doc Severinsen Big Band, Joe LaBarbera Quintet, Kurt Elling, in addition to single performances with Dave Liebman, Mel Lewis, Hank Jones, Clark Terry, and as a soloist with the Houston Symphony Orchestra. His teachers include Dave Liebman, Al Regni, Micheal Nascimben, Joe Allard, Ramon Ricker, and Mardele Marcellus.

In Los Angeles Rob is active as a recording musician in the jazz community and TV and film. As a jazz artist he is a featured sideman with Steve Houghton, Bob Sheppard, Bill Cunliffe, Matt Harris, and Mitch Watkins for Enja records. In TV and film Rob has worked on Star Trek, Jag, Party of Five, Fish Police and many films including the jazz score of "Dillinger" with Charlie Haden.