Festival Supreme in an annual comedy music festival held in Los Angeles every October hosted by Jack Black and Kyle Gass as Tenacious D. The first event was held in 2013 at the Santa Monica Pier and 2014 and 2015 saw the festival take place at the Shrine Auditorium. The festival has featured names such as Conan O'Brien as well as David Cross and Sarah Silverman.
References
Festival Supreme Wikipedia(Text) CC BY-SA