Bridgit Mendler proves her prowess as a balladeer on “Somebody” before Chris Brochu takes the mic on “And the Crowd Goes,” a rock ‘n’ rap hybrid that harkens back to the mid-‘90s when Anthrax and Public Enemy were bringing the noise. Naomi Scott croons more demurely than Mendler on the uplifting “She’s So Gone,” a near perfect piece of radio-groomed guitar-pop.