Jennifer Lopez's new single, "Live It Up" (2101/Capitol), has so many catchy parts that it has to work. Right? Between J. Lo's cooing, Pitbull's introductory inspirational rap and Red One's sleek production -- not to mention the Madonna-esque cheerleader chant and the dubstep breakdowns -- there's something for everyone here. Does it hold together? Not exactly. But the distractions are so compelling, it's too hard to remember to get mad about it.