5. Give Your Heart A Break
Demi Lovato isn't one of those artists whose best songs quietly lay in her back catalogue. In reality, her most successful singles are easily among her best, and this is no exception. Classically structured yet infinitely memorable, "Give Your Heart a Break" drills into your head once you hear it and never leaves. This is no easy feat, however; the gradual layering of background music, the playful lyrics and a nearly perfect pop chorus are designed for continuous radio play. And it doesn't hurt that it's such an earnest message amidst the field of heartbreak and resentment that is today's Top 40.