专辑制作人名单 CREDITS: track 1: Katy Perry, Max Martin, Savan Kotecha & Ali Payami track 2: Katy Perry, Max Martin, Sia Furler, Ali Payami & Sarah Hudson track 3: Max Martin, Ali Payami, Shellback & Ferras Alqaisi Swich Swich: Katy Perry, Duke Dumont, Sarah Hudson & Brittany Hazzard track 5: Katy Perry, Hayden James, Ferras Alqaisi & Thomas Stell track 6: Katy Perry & Jack Garratt 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