After two years off, the Red Hot Chili Peppers are hard at work on their 10th album, due later this year, and, according to frontman Anthony Kiedis, the time apart has reinvigorated the band. "I think that during the writing of this record I have been the most open-minded and refreshed than I have been in a long time," Kiedis tells SPIN. "I guess that comes from a much-needed hiatus and becoming a father." While Kiedis was family focused, bassist Flea studied music theory at USC and played in Atoms for Peace with Radiohead's Thom Yorke, drummer Chad Smith played with all-star rock act Chickenfoot, among others, and, most stunningly, guitarist John Frusciante quit the band in 2008. "It is always going to change the chemistry and feeling of the music when such a creative force as John Frusciante leaves," Kiedis says.