Credit

• Arranged By - Ryan Tedder (11)
• Arranged By [Choir & Orchestra] - Deborah Lurie (12)
• Arranged By [Strings] - David Campbell (5, 14)
• Arranged By [Strings] - Tim Roberts (2 to 4)
• Bass - Chris Chaney (1, 5, 6, 14)
• Bass - Greg Wells (4, 13)
• Bass - Paul Bushnell (12)
• Bass - Paul Ill (7)
• Bass - Ryan Tedder (11)
• Bass - Shellback (2) (3, 8)
• Conductor [Strings] - David Campbell (5, 14)
• Drum Programming - Andrew Chavez (7)
• Drums - Abe Laboriel, Jr.
• Drums - Dean Butterworth (12)
• Drums - Dorian Crozier (1, 5, 6)
• Drums - Dr. Luke (2)
• Drums - Greg Wells (4, 13)
• Drums - John Miceli (1, 6, 14)
• Drums - Shellback (2) (3)
• Edited By [Digital Editing] - Paul DeCarli (12)
• Edited By [Vocals] - Emily Wright (2)
• Engineer - Doug McKean (1, 5, 6, 14)
• Engineer - Emily Wright (2)
• Engineer - Linda Perry (7)
• Engineer - Noel Zancanella (11)
• Engineer - Sam Holland (2)
• Engineer [Additional Mix] - Andrew Schubert (1, 5, 6, 12, 14)
• Engineer [Additional Mix] - Brad Townsend (1, 5, 6, 12, 14)
• Engineer [Additional] - Hatch Inagaki
• Engineer [Assistant Mix] - Keith Armstrong (1, 5, 6, 12, 14)
• Engineer [Assistant Mix] - Nik Karpen (1, 5, 6, 12, 14)
• Engineer [Assistant] - Aaron Walk (5, 14)
• Engineer [Assistant] - Aniela Gottwald
• Engineer [Assistant] - Ghazi Hourani (10)
• Engineer [Assistant] - Russ Waugh (1, 5, 6, 14)
• Engineer [Assistant] - Steve Rea (1, 5, 6, 14)
• Engineer [Assistant] - Thomas Aiezza (7)
• Engineer [Assistant] - Vanessa Silberman (2)
• Engineer [Choir & Strings] - Hatch Inagaki
• Engineer [Mix] - John Hanes (2 to 4, 7 to 9, 13)
• Engineer [Pro Tools] - Andrew Chavez (7)
• Engineer [Pro Tools] - Dan Chase (5)
• Engineer [Pro Tools] - Lars Fox (1, 5, 6, 14)
• Engineer [Pro Tools] - Richard Brown (18) (7)
• Guitar - Brian Ray (10)
• Guitar - Greg Wells (4, 13)
• Guitar - Justin Hawkins (1)
• Guitar - Linda Perry (7)
• Guitar - Marc Vangool (12)
• Guitar - Orianthi (11)
• Guitar - Paul Crook (14)
• Guitar - Phil X (12)
• Guitar - Randy Flowers (14)
• Guitar - Rivers Cuomo (9)
• Guitar - Rob Cavallo (14)
• Guitar - Shellback (2) (3, 8)
• Guitar - Tim Pierce (1, 5, 6, 14)
• Keyboards - Dr. Luke (2)
• Keyboards - Greg Wells (4, 13)
• Keyboards - Howard Benson (12)
• Keyboards - Jamie Muhoberac (1, 5, 6, 14)
• Keyboards - Linda Perry (7)
• Keyboards - Max Martin (2, 8)
• Keyboards - Shellback (2) (8)
• Mastered By - Ted Jensen
• Mixed By - Chris Lord-Alge (1, 5, 6, 12, 14)
• Mixed By - Mark "Spike" Stent
• Mixed By - Serban Ghenea (2 to 4, 7 to 9, 13)
• Mixed By [Assistant] - Matty Green (2) (10, 11)
• Mixed By [Assistant] - Tim Roberts (7 to 9, 13)
• Organ - Jamie Muhoberac (14)
• Other [Phase Operator] - Ghazi Hourani (10)
• Percussion - Linda Perry (7)
• Photography - Warwick Saint
• Piano - Jamie Muhoberac (5)
• Piano - Ryan Tedder (11)
• Producer - Dr. Luke (2)
• Producer - Greg Wells (4, 9, 13)
• Producer - Howard Benson (12)
• Producer - Jeff Bhasker (10)
• Producer - Kristian Lundin (8)
• Producer - Linda Perry (7)
• Producer - Max Martin (3, 8)
• Producer - Rob Cavallo (1, 5, 6, 14)
• Producer - Ryan Tedder (11)
• Producer - Shellback (2) (3, 8)
• Producer [Assistant] - Jaime Neely (1, 5, 6, 14)
• Producer [Production Manager] - Cheryl Jenets (1, 5, 6, 14)
• Producer [Vocals] - Claude Kelly (2)
• Producer [Vocals] - Jim Beanz (11)
• Producer [Vocals] - Ryan Tedder (11)
• Programmed By - Dan Chase (1, 6, 14)
• Programmed By - Dorian Crozier (1, 6)
• Programmed By - Doug McKean (14)
• Programmed By - Dr. Luke (2)
• Programmed By - Fabien Waltmann (4, 9, 13)
• Programmed By - Greg Wells (4, 13)
• Programmed By - Henry Strange (10)
• Programmed By - Howard Benson (12)
• Programmed By - Rob Wells (4, 13)
• Programmed By - Ryan Breen (13)
• Recorded By - Al Clay
• Recorded By - Ann Mincieli (3)
• Recorded By - Anthony Kilhoffer (10)
• Recorded By - Brian Warwick (8)
• Recorded By - Christian Baker (3)
• Recorded By - Doug Tyo (3)
• Recorded By - Greg Wells (4, 9, 13)
• Recorded By - Luke Tozour (4, 9, 13)
• Recorded By - Max Martin (3, 8)
• Recorded By - Mike Plotnikoff (12)
• Recorded By - Shellback (2) (3, 8)
• Recorded By [Assistant] - Chris Galland (3)
• Technician [Drum Tech] - Joe Libretti (1, 6, 14)
• Technician [Drum Tech] - Jon Nicholson (3) (12)
• Technician [Drum Tech] - Mike Fasano (1, 5, 6)
• Technician [Guitar Tech] - Marc Vangool (12)
• Technician [Technical Assistance] - Chris Concepcion