Katy Perry has recorded a "funky" duet with Selena Gomez.
The 'Teenage Dreams' singer penned a track called 'Rock God' for the 18-year-old Disney star's new album 'A Year Without Rain', but was eventually persuaded to record back-up vocals for the song too.Describing the tune, Selena said: "Katy Perry gave me a song called 'Rock God.' It's one of my favourite songs ever. I actually had to fight for that song. I wanted it so bad. It's kind of funky, and I think I used her style and we kind of mixed it up with the producers that I worked with my style, so we made it a little bit more techno.
"I just loved her style, and she did background vocals on that as well. So I was very, very blessed on the record, because it's so much fun, and I can't wait to perform it."
