Katy Perry is set to appear as a guest star on her on-off boyfriend John Mayer's latest album.
The pop star sings a country-tinged duet called Who You Love with Mayer on his Paradise Valley long player.
KP, who is [uuid=c14d6de3-be94-4966-9e20-e527a634f832]currently relaunching herself[/uuid] as a more serious artist, appears to have been dating Mayer again in a low-key way [uuid=c7812113-7f88-4eda-8545-088494c9797b]in recent months[/uuid].
And last month he praised her at a gig, with Rolling Stone quoting him as saying she was "so patient" and took the time "to continue to get to know me and love me".
Mayer has also hooked up with rapper Frank Ocean for one of the tracks on his new album, a short "poetic" track called Wildfire.

Katy [uuid=9b8c4d68-3af1-4983-be20-7a1db0c410ba]recently denied[/uuid] that Mayer would be featuring on her new album.