Carly Rae Jepsen is co-writing a new song with fans as part of a competition.
MTV News reports the Call Me Maybe star has teamed up with Coca-Cola and American Idol for the Perfect Harmony contest, which allows fans of the US show to choose lyrics to a tune, written by Carly.
Once the introduction to the song is unveiled, fans vote between three choices on what lines the singer should sing next. The process continues until the song is completed in May.
Carly - who will perform the track during the American Idol final - said: "Well I loved the idea that it was a massive collaboration.
"And, there's nothing better than sort of getting fan feedback. I know even with this past year, it's been a big part of my process, hearing what the fans love. And it seemed like a crazy challenge to write a song with three different versions to it and allow the fans to choose their favourite and help me create not only that, but the performance itself."
Fans also get to offer their opinion on the instruments, Carly's outfit and the set for the performance.