 During the 1970s he was a member of the New York Jazz Quartet and The Thad Jones/Mel Lewis Orchestra, and in the 1980s a member of Quest.He has also appeared with Joe Lovano, Hank Jones and Paul Motian on Lovano's records "I'm All For You" and "Joyous Encounter".Mraz is also known for performing solos with a bow in arco style, similar to that of Paul Chambers.