. "non_vocal_instrumentalist" . . . "Matz, Jeff"@en . "Jeff Matz"@en . . . . "American musician" . "Jeff Matz (born 1977) is the bass guitar player for the stoner rock/heavy metal band High On Fire. His former bands include the thrash metal outfit Holy Terror, stoner band Camarosmith, and the hardcore punk outfit Zeke."@en . "1977Z"^^ .