- Performance credits
- Avril Lavigne: Primary artist, Guitar, Backing Vocals
- Kenny Aronoff: Percussion, Drums
- Josh Freese: Drums
- Victor Lawrence: Cello
- Butch Walker: Acoustic guitar, Bass, Percussion, Piano, Electric guitar, Keyboards, Background vocals
- Michael Ward: Guitar
- Patrick Warren: Strings, Keyboards, chamberlain
- Phil X: Guitar
- Brooks Wackerman: Drums
- Raine Maida: Keyboards
- Chantal Kreviazuk: Piano, Keyboards
- Mike Elizondo: Bass
- Brian E. Garcia: Percussion
- Sam Fisher: Violin
- Samuel Formicola: Violin
- Mark Robertson: Violin
- Kenny Cresswell: Drums
- Shanti Randall: Viola
- Jason Lader: Bass
- Bill Lafler: Drums
- Static: Keyboards
- Jon O'Brien: Keyboards
- Nick Lashley: Guitar
- Evan Taubenfeld: Acoustic guitar, Drums, Electric guitar, Background vocals
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- Technical credits
- David Campbell: String Arrangements
- Don Gilmore: Producer, Engineer
- Victor Lawrence: Digital editing
- Butch Walker: Programming, Producer
- Raine Maida: Producer, Engineer, Digital editing, String arrangements
- Chantal Kreviazuk: String arrangements
- John Rummen: Art direction
- Leon Zervos: Mastering
- Paul David Hager: Engineer
- Brian E. Garcia: Engineer, Digital editing
- Dan Certa: Engineer
- Kim Kinakin: Art direction
- Jason Lader: Programming, Digital editing, String concept
- Russ-T Cobb: Engineer
- Dan Certina: Engineer
- Dan Chase: Digital editing, Drum programming
- Static: Programming
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