Written by: Amy Winehouse

Lyrics by: Amy Winehouse

Produced by: Mark Ronson

Performed by: Homer Steinweiss (drums (drum set)), Thomas Brenneck (guitar), Neal Sugarman (tenor saxophone), Ian Hendrickson-Smith (baritone saxophone), Victor Axelrod (electric piano, handclaps, piano), Dave Guy (trumpet), Binky Griptite (guitar), Nick Movshon (bass guitar), Victor Axelrod (piano)

Mixed by: Matt Paul (assistant), Tom Elmhirst