Taylor Swift & Zac Efron Duet, Cover Foster The People On ‘Ellen’

Dr. Seuss’ The Lorax co-stars Taylor Swift and Zac Efron hit up The Ellen DeGeneres Show and surprised the audience with a duet. Turns out Taylor taught Zac how to play guitar while they were working on the animated feature together, so they busted out a rendition of their practice song, “Pumped Up Kicks” by Foster The People (with the altered lyrics “every single time I come on the show it’s really weird, really weird, all because of Ellen”). The only thing missing from this surprise performance: Taylor and Zac’s fellow Lorax castmate/“I’m Still Hot” songstress Betty White acting as their hype girl.