Earlier in the week, Wikipedia fuelled speculation that Aussie producer Hayden James had contributed a song to Katy Perry's new album Witness and now it seems it's been confirmed.
A Redditor tapped into the iTunes metadata for each song which is a nerdy way for saying they did some detective work with the album pre-order and uncovered the writing credits.
Hayden James and Golden Features are there on track five but there are also some other surprising names on there.
Purity Ring have worked on three songs on the record while Hot Chip have contributed the final song. Previously, Hot Chip remixed Perry's Chained To The Rhythm while Purity Ring remixed Rise.
On top of that there are your usual suspects like Max Martin, DJ Mustard, Mike Will Made-It and Sia.
The album will be out 9th June and while Perry isn't having the best run of late with some cringeworthy performances, these names will most likely have you coming in for a listen.
Check out all the credits below (via Reddit):
track 1: Katy Perry, Max Martin, Savan Kotecha & Ali Payami
track 2: Katy Perry, Max Martin, Sia Furler, Ali Payami & Sarah Hudson
track 3: Various Artists, Max Martin, Ali Payami, Shellback & Ferras Alqaisi
Swish Swish: Katy Perry, Duke Dumont, Sarah Hudson & Brittany Hazzard (Starrah)
track 5: Katy Perry, Hayden James, Ferras Alqaisi & Thomas Stell
track 6: Katy Perry & Jack Garratt (goddess probably)
track 7: Katy Perry, Ali Payami, Corin Roddick, Sarah Hudson & Megan James
track 8: Katy Perry, Ali Payami, Corin Roddick, Sarah Hudson & Megan James
CTTR: Katy Perry, Skip Marley, Max Martin, Sia Furler & Ali Payami track 10: Katy Perry, Michael Williams, Marcus Bell, Sarah Hudson & Mia Moretti
BA: Katy Perry, Max Martin, Shellback, Oscar Holter, Ferras Alqaisi, Quavious Marshall, Kiari Cephus & Kirsnick Ball
track 12: Katy Perry, Sarah Hudson, Corin Roddick, Megan James & Oscar Holter
track 13: Katy Perry, Elof Loelv, Noonie Bao, DJ Mustard, Max Martin & Twice As Nice
track 14: Katy Perry, Jeff Bhasker & Sarah Hudson
track 15: Katy Perry, Alexis Goddard, Joe Taylor & Ferras Alqaisi