Dave Grohl, Pat Smear and Krist Novoselic reunite for six-song set to close out San Bernardino, California fest
"I didn't realize it was such a historical thing," 19-year-old Maggie Poukkula says. "I thought they were just cool pictures of my dad and Kurt jamming together"
"The dark stuff at the end I think would bum me out," singer says
First single "Lampshades on Fire" will precede the band's first album since 2007
1960s Japanese instrument was destroyed in music video