Kyle Richard Gass is an American musician, singer, and actor. He is best known for being a founding member of the Grammy-winning comedy band Tenacious D. He is also a member of Trainwreck and the Kyle Gass Band. Gass is known for sharing writing credit on the band's parodies of rock tropes. He also serves as the serene onstage counterweight to Black's operatically manic vocals. Gass attended UCLA, where he met Tim Robbins.