Provided to YouTube by Jive Circus · Britney Spears Circus (Deluxe Version) ℗ 2008 RCA Records, a division of Sony Music Entertainment Released on: 2008-12-02 Background Vocal, Composer, Lyricist: Claude Kelly Guitar, Keyboards, Percussion, Composer, Lyricist, Programmer: Lukasz “Doctor Luke” Gottwald Keyboards, Percussion, Producer, Programmer: benny blanco Composer, Lyricist: Benjamin Levin Background Vocal: Cathy Dennis Background Vocal: Myah Marie Producer: Dr. Luke Unknown, Engineer: Matt Beckly Engineer: Sam Holland Unknown, Engineer: Emily Wright Assistant Engineer: Chad Carlisle Assistant Engineer: Tatiana Gottwald Assistant Engineer: Chris Kasych Assistant Engineer: Eric Weaver Mixing Engineer: Serban Ghenea Assistant Engineer: Tim Roberts Engineer: John Hanes Mastering Engineer: Tom Coyne Auto-generated by YouTube.