45. Justin Bieber, 'Die in Your Arms'
Bieber's best weapon has always been his vocal tone – a soulful rasp that hints at depths of longing beyond his years. That tone is deployed to wondrous effect in this throwback blue-eyed R&B single, whose vibe, and lilting melody, are pure prime-period Hall & Oates. Bieber's manager called it "hater-proof." He's right.