[2] Zager was a member of jazz rock band Ten Wheel Drive from 1968 to 1973.
[3] Zager has produced for artists such as Whitney Houston, Cissy Houston, Peabo Bryson, Luther Vandross, Deniece Williams, Jennifer Holliday, Joe Williams, Arturo Sandoval, Herb Alpert, Olatunji, and the (Detroit) Spinners.
Zager also produced for R&B artist Street Corner Symphony (1975), Marilyn Chambers (1976), Andrea True (1977),[4] Dee Edwards (1980), Take Five (1981), and Elusion (1981).
[2] During the summers of 2006 and 2008 Zager taught at the College of Music at Payap University in Chiang Mai, Thailand.
[2] He is the author of Writing Music for Television and Radio Commercials (A Manual for Composers and Students) published by Scarecrow Press,[8] and Music Production: For Producers, Composers, Arrangers, and Students, also published by Scarecrow Press.