Historic Los Angeles theater Royce Hall, located on the UCLA campus, provided a spectacular backdrop for Jason Mraz’s taping of Live from the Artists Den. Accompanied by the four members of Raining Jane, Mraz breathed new life into old favorites like “I Won’t Give Up” and performed material from his collaborations with the LA folk-rock group, from the album Yes!. The set was punctuated by classic Mraz hit, “I’m Yours,” which earned a full-throated singalong from the rapt crowd.