She looks so serious!

Justin Bieber and Taylor Swift pen song for 'Believe'

Apparently Taylor Swift wasn’t too upset about getting Punk’d by Justin Bieber recently. The post-teen princess teamed up with the Canadian wunderkind to write a song for his next album, Believe. Per MTV News, Swift will be a little bit country to Bieber’s a little bit zebra pants, though there’s no word on whether she provided vocals on the track, à la Hunger Games megahit “Safe and Sound,” or if she’ll simply take a writing credit.
Swift joins a roster of heavy hitters on the collab, including Kanye West and Drake. Said Bieber, “With my music, it doesn’t only stay in a box. It’s so out there. Everything is so different and that’s why I’m so happy with this album.” “Boyfriend,” Bieber’s first single from Believe, peaked at number 2 on the Billboard Hot 100, and the singer recently sent shivers down the spines of his followers when news of collaborations with Carly Rae Jepsen and One Direction hit the Internet.

Source : Music Mix