Justin Bieber collaborates with Taylor Swift to write new song

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.