Voting ends at 9pm on 4/21. Until then, keep voting!
Champion: Katy Perry 'Birthday'
Katy Perry had a break out hit with her song "I Kissed A Girl," but it was her second album, Teenage Dreams, that propelled her into a worldwide popstar. Five singles from the album hit the top of the charts, a feat only replicated by Micheal Jackson's Bad album.
Challenger: Kodaline 'All I Want'
Formerly known as 21 Demands, Stephan, Vinny, Jason and Mark make up Kodaline, a band from Dublin, Ireland. Songs from their debut album, In A Perfect World, have been featured on episodes of "Grey's Anatomy" and "The Vampire Diaries."