Dave Grohl's 'Sound City' explores human element
LA Premiere of Sound City
Dave Grohl, left, a former member of Nirvana and director of the documentary film "Sound City," shares a laugh with music producer Butch Vig at the premiere of the film on Thursday, Jan. 31, 2013 in Los Angeles. Vig produced Nirvana's 1991 album "Nevermind." (Photo by Chris Pizzello/Invision/AP Images)






