Now that's what I call #1s

Locked out of heaven / Bruno Mars --

Roar / Katy Perry --

Timber / Pitbull w/Kesha --

Happy / Pharrell Williams --

All about that bass / Meghan Trainor --

Rude / Magic! --

Fancy / Iggy Azalea w/ Charli XCX --

Royals / Lorde --

Low / Flo Rida w/T-Pain --

Lollipop / Lil Wayne w/Static Major --

I gotta feeling / Black Eyed Peas --

Born this way / Lady Gaga --

Stronger / Kelly Clarkson --

Viva la vida / Coldplay --

Big girls don't cry / Fergie --

Just give me a reason / Pink w/Nate Ruess --

All of me / John Legend --

Don't forget about us / Mariah Carey.