premise: Tenacious D started in 1997.
hypothesis: Tenacious D is an American comedy rock duo that was formed in Los Angeles , California in 1994 . Composed of lead vocalist and guitarist Jack Black and lead guitarist and vocalist Kyle Gass , the band has released three albums -- Tenacious D ( 2001 ) , The Pick of Destiny ( 2006 ) and Rize of the Fenix ( 2012 ) . The band first gained popularity in 1997 when they starred in their eponymous television series and began to support large rock acts .