The Jonas Brothers may still be good Disney boys, with a new series on the Mickey Mouse channel, but even they aren't going to take a Taylor Swift dis lying down. "I get a rep for breakin' hearts/ Now I'm done with superstars/ And all the tears on her guitar," sings Joe Jonas on "Much Better," a not-so-subtle dig at his country-star ex. It's the dishiest—and dreamiest—moment on the trio's fourth studio album. Despite a fresh infusion of horns, though, the new disc lacks the punch of last year's A Little Bit Longer. And the JoBros' other attempts at brandishing a little edge produce mixed results: The snarling attack of "World War III" works, but "Don't Charge Me for the Crime"—a cringe-worthy collaboration with rapper Common—doesn't.