Katy Perry's Demo Of Britney Spears' Song 'Passenger' Has Been Released

Katy Perry’s version of a song called “Passenger,” which ended up being released by Britney Spears, has leaked. 

Posted online this week, Perry’s version of the track finds her performing the familiar lyrics, "The road will twist and turn but / I know that I am in good hands/ I’ve never been a passenger no / But we'll see more without a map” over heavy pop production. 

Billboard reports that the song was produced by Diplo and co-written by Perry and Sia, and was eventually included on Britney’s 2013 album Britney Jean. 

Due to the timing and style, fans seem to think the track could have ended up on Perry’s Prism album.