Tommy Coster (born June 10, 1966) is an American producer, composer and keyboardist. California-born and San Francisco-raised, Coster played piano as a youth, continuing his studies at Berklee College of Music in Boston in 1986 and 87.
Coster has played with and/or composed for many groups and musicians including his father Tom Coster, Eminem, Santana, Dr. Dre, Snoop Dogg, 50 Cent, Steve Smith and Vital Information, Dido, Ice Cube, Boz Scaggs, John Tesh, Sheila E., Frank Gambale, and Dennis Chambers. Coster also produced several solo jazz fusion recordings for Fantasy, Headfirst, and JVC.
Some of Coster's best known compositions include "The Real Slim Shady" by Eminem, "Heat" by 50 Cent and "Zulu" recorded by Santana in 1977 when Coster was only 11 years old.