==Background=="Piece of Me" was co-written and produced by the Swedish duo Christian Karlsson and Pontus Winnberg, professionally known as Bloodshy & Avant, along with Klas Åhlund.
Britney Spears je s pesmijo »Piece of Me« nastopila na turnejah The Circus Starring Britney Spears (2009) in Femme Fatale Tour (2011).