Credits

Lil Wayne: Additional Vocals
Bill Reichenbach Jr.: Trombone
Dave Eggar: Cello
Elvis Costello: Vocals
Pharrell Williams: Synthesizer
Deborah Harry: Vocals
Andrew Coleman: Recording
Machine: Remix
Clinton Bradley: Remix
Patrick Stump: Horn Arrangement
Tony Visconti: Conductor, Arranger
Travis McCoy: Additional Vocals
Ted Jensen: Mastering
Lorenza Ponce: Violin
Ken Kugler: Trombone
Gary Grant: Trumpet
Jerry Hey: Trumpet, Arranger
Nicolas Fournier: Mixing Assistant
Ira Nepus: Trombone
Darrell Leonard: Horn Arrangement
Ryan Kennedy: Recording Assistant
Erich Talaba: Engineer, Technician
Mario J. McNulty: String Engineer
Neal Avron: Producer, Mixing, Recording
Zeph Sowers: Assistant Engineer
Antoine Silverman: Violin, Concert Manager
Steven M. Holtman: Trombone
Anja Wood: Cello
Maxim Moston: Violin
William Beckett: Vocals
Brendon Urie: Piano, Vocals
Gabe Saporta: Additional Vocals
Brian Lewandowski: Mixing Assistant
Kiki Cholewka: Assistant Engineer
Tom Petterson: Baritone Saxophone, Tenor Saxophone