Bieber collaborates with Taylor Swift

London: Teen sensation Justin Bieber has teamed up with Singer Taylor Swift to write a song together.

Bieber, who is recording a new album, invited Swift to join him in the studio Aug 26, reports contactmusic.com. "Wow! got to see Justin Bieber and Taylor Swift write a song together last night. Let`s do it again," Grammy-winning producer Thaddis Harrell posted on micro-blogging site Twitter. He later posted on Swift`s wall, "You and Justin(Bieber) killed that writing last night." The collaboration came just days after Swift and Bieber thrilled fans with a surprise duet at a concert in Los Angeles Aug 23. IANS