Credits adapted from the album's liner notes •
Selena Gomez –
lead vocals (all tracks), background vocals (track 4) •
Rock Mafia –
production,
mixing & additional background vocals (tracks 1, 8, 10) •
Toby Gad – production, mixing,
programming &
instruments (tracks 2, 4) •
Greg Kurstin – production, mixing, engineering,
keyboards,
bass,
guitar & programming (track 6) • Nigel Lundemo –
digital editing (tracks 1, 8, 10), additional vocal editing (track 12) •
Josh Alexander – production, programming,
recording & instruments (track 9) •
Sandy Vee – production, vocal production, mixing & keyboards (track 11) •
Mark Portmann – language adaptation, recording, vocal production & additional vocal editing (track 12) •
Paul Palmer – mixing (tracks 1, 8, 10) • Adam Comstock – engineering (tracks 1, 8, 10) • Steve Hammons – engineering (tracks 1, 8, 10) • Devrim Karaoglu – co-production (tracks 1, 8, 10) •
Tim Pierce – guitar (tracks 1, 8, 10) •
Tim James – digital editing (tracks 1, 8, 10) •
Brooke Adams – additional background vocals (tracks 1, 8, 10) •
Emanuel Kiriakou – production (tracks 3, 12), instruments (track 3) • Serban Ghenea – mixing (tracks 3, 5, 12) • John Hanes – mix engineering (tracks 3, 5, 12) •
Espen Lind – recording, guitar & keyboards (track 11) • Tim Roberts – mix engineering assistance (tracks 3, 12) •
Pixie Lott – lead vocals & background vocals (track 4) •
Stefan Abingdon – production & mixing (track 7) • Brian Reeves – mixing & recording (track 7) • Jon Vella – additional programming (track 8, 10) •
Noel Zancanella – programming & instruments (track 9) • Carmen Michelle – vocal production & backing vocals (track 11) • Edgar Cortazar – language adaptation & vocal production (track 12) • Ross Hogarth – engineering (track 1) •
Priscilla Renea – backing vocals (track 2) • Meleni Smith – backing vocals (track 2) •
Andrew Goldstein – additional
synthesizer (track 3) •
Dreamlab – production (track 5) • Phil Seaford – engineering assistance (track 5) •
Jesse Shatkin – engineering (track 6) •
Nicole Morier – backing vocals (track 6) • Lindsey Harper – backing vocals (track 7) • Jimmy Messer – guitar (track 8) •
Billy Steinberg – production (track 9) •
Phil Tan – mixing (track 9) • Chris Garcia – digital editing (track 9) •
Scott Roewe – logic and pro tools teching (track 9) • Damien Lewis – additional engineering assistance (track 9) • Thomas Sturges – co-production (track 10) •
Espionage – production (track 11) • Francis Murray – recording (track 11) • Howard Willing – recording (track 11) • Carlos Castro – recording (track 12) • Leyla Hoyle – background vocals (track 12) ; Credits • Robert Vosgien – mastering •
Jon Lind – A&R • Cindy Warden – A&R coordination • Lincoln Wheeler – marketing • Mandy Teefey – management • David Lande – legal • David Snow – creative director • Jeri Heiden – art direction • Nick Steinhardt – art direction & design • Kate Turning – photography • Steve Jacobi – photo producer ==Charts==