For purist rock and metal fans, Redd Kross might raise a lot of questions. For example, how has this band this eclectic survived since the birth of Los Angeles punk in the late ‘70s? How do two brothers make music that sounds like nine bands from different backgrounds jamming together at once? What kind of music even is this? “I don’t really think in terms of genre when we’re making music,” says bassist and vocalist Steven McDonald. “If Jeff [McDonald, guitars and vocals] wants to use heavy metal double kick drums underneath a folky acoustic guitar, that’s fine with me. Whatever serves the song best is what we look for. At most, I probably try to consider, when thinking big-picture, whether or not we have enough up tempo, mid tempo, mellow…energy dynamics, I suppose you could c...