Zac Efron and Taylor Swift Make Beautiful Music Together

Zac Efron and Taylor Swift lend their voices to the new animated film "The Lorax" -- in theaters March 2 -- but who knew the young stars would sound pretty good together in song, too?

Zac and Taylor visited "The Ellen DeGeneres Show" Friday, where they performed a version of Foster the People's hit "Pumped Up Kicks." They definitely took some liberties with the lyrics, much to Ellen's delight.

Check out the adorable duet below:



Zac has been moving away from his "High School Musical" past with meatier roles lately, but we think he'd be great in a movie musical. "HSM 4," anyone?