Dave Grohl has been on a whirlwind promo tour for Sound City, his directorial debut about the famed Los Angeles studio that recorded albums by Nirvana, Metallica, Nine Inch Nails and a slew of classic rock acts.

King Foo appeared on Jimmy Kimmel Live last night alongside roots rock veteran and former Creedence Clearwater Revivial frontman John Fogerty to perform the latter's 1969 anti-war anthem "Fortunate Son."

Astute Nirvana fans know this is the latest in a long history of Nirvana and Creedence. In 1986, before the formation of Nirvana, Kurt Cobain formed the Sellouts, a short-lived Creedence Clearwater Revival tribute band with himself on drums and Krist Novoselic on guitar (the band dissolved when bassist Steve "Instant" Newman lost his fingers to a chainsaw in a logging accident). 

Later, in Nirvana's early days with Dave Foster (not yet Grohl) on drums, the band often covered CCR. Listen to audio of Nirvana's gritty, punk version of "Bad Room Rising," played live during a 1988 gig in Tacoma, WA. 

Grohl's Sound City Players debuted at Sundance Film Festival before performing a three-hour set in Los Angeles. Up next for the collective: Austin's South by Southwest festival next week.