Carly Rae Jepsen owes a lot to Justin Bieber, but it's truly her charm and infectious Robyn-esque ear for pop melody that keeps us coming back. "I Really Like You" is no "Call Me Maybe," but its saccharine message of crushin'—and crushin' hard—is just as universal. It helps that the tune is impossible to listen to just once. Seriously. We dare you! —Maria Sherman