Behind the shambolic splendor of a Red Hot Chili Peppers’ performance is a tightly coiled symbiosis of musicianship. The band grapples with themes of life and death on I’m With You, an album born from the ashes of a friend’s fatal overdose. Bringing a subtle style, Josh Klinghoffer has replaced John Frusciante as guitarist, but the band still retains its unmistakable Chili Pepper flavor. The totemic lead single, “The Adventures of Rain Dance Maggie,” soars and bops with magnitude