Jack Black is out of Tenacious D.
Thomas Jacob `` Jack '' Black ( born August 28 , 1969 ) is an American actor , comedian , writer , producer , musician and singer . Black is the lead vocalist of the comedic rock group Tenacious D which he formed in 1994 with friend Kyle Gass . Tenacious D . 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 ) . Tenacious D (TV series) . It featured the fictional accounts of the real band Tenacious D , which is composed of members Jack Black and Kyle Gass .