Official "Circus" Tracklist Details - 2 New International Bonus Tracks

An official Sony BMG press release website has confirmed there will be 2 extra bonus tracks for the international release of "Circus". Entitled "Rock Me In" & "Phonography" the tracks will be avaliable on all releases of the album outside of the United States. Meanwhile, Cheiron-Music.com has added Circus' official tracklist details including producers, writers and background vocals:

WOMANIZER - Main Version
Written by: Briscoe, Nikesha / Akinyemi, Rafael
Produced by: K. Briscoe / The Outsyders

CIRCUS - Main Version
Written by: Claude Kelly / Gottwald, Lukasz / Levin, Benjamin
Produced by: Blanco, Benny / Dr. Luke
Guitar: Gottwald, Lukasz
Keyboards: Blanco, Benny / Gottwald, Lukasz
Percussion: Blanco, Benny / Gottwald, Lukasz
Background vocals: Claude Kelly / Dennis, Cathy / Marie, Myah

OUT FROM UNDER - Main Version
Written by: Birgisson, Arnthor / Hector, Wayne / Peiken, Shelly
Produced by: Sigsworth, Guy
Guitar: Page, Andy
Keyboards: Sigsworth, Guy
Strings: Sigsworth, Guy
Background vocals: Haywood, Leah

KILL THE LIGHTS - Main Version
Written by: Araica, Marcella / Boyd, Luke / Hills, Nathaniel / Washington, James
Produced by: Danja / Beanz, Jim

SHATTERED GLASS - Main Version
Written by: Claude Kelly / Gottwald, Lukasz / Levin, Benjamin
Produced by: Blanco, Benny / Dr. Luke / Claude Kelly
Keyboards: Blanco, Benny / Gottwald, Lukasz
Percussion: Blanco, Benny / Gottwald, Lukasz
Guitar: Gottwald, Lukasz
Background vocals: Claude Kelly / Wagner, Windy

IF U SEEK AMY - Main Version
Written by: Kotecha, Savan / Kronlund, Alexander / Martin, Max / Shellback
Produced by: Martin, Max
Background vocals: Kinnda / Martin, Max / Spears, Britney

UNUSUAL YOU - Main Version
Written by: Jonback, Henrik / Karlsson, Christian / Livingston, Kasia / Pontus Winnberg
Produced by: Bloodshy & Avant
Guitar: Bloodshy & Avant / Jonback, Henrik
Keyboards: Bloodshy & Avant
Background vocals: Livingston, Kasia

BLUR - Main Version
Written by: Araica, Marcella / Barthe, Stacy / Hills, Nathaniel
Produced by: Danja
Background vocals: Boyd, Luke

MMM PAPI - Main Version
Main Artist: Spears, Britney / Let's Go To War
Written by: Gough, Adrien / Nicole Morier / Peter-John Kerr / Spears, Britney / Walter, Henry
Produced by: Let's Go To War / Nicole Morier
Guitar: Worthy, Chris

MANNEQUIN - Main Version
Written by: Fauntleroy II, James / Knox, Rob / Mason, Jr.,Harvey
Produced by: Knox, Rob / Mason, Jr.,Harvey

LACE AND LEATHER - Main Version
Written by: Gottwald, Lukasz / Levin, Benjamin / Jackson, Ronnie / Storm, Frankie
Produced by: Blanco, Benny / Dr. Luke / Claude Kelly
Keyboards: Blanco, Benny / Gottwald, Lukasz
Percussion: Blanco, Benny / Gottwald, Lukasz
Guitar: Gottwald, Lukasz
Background vocals: Nova, Debi / Sebert, Kesha

MY BABY - Main Version
Written by: Sigsworth, Guy / Spears, Britney
Produced by: Sigsworth, Guy
Guitar: Page, Andy
Piano: Page, Andy
Stings: Page, Andy

RADAR - Main Version
Written by: Karlsson, C. / P. Winnberg / H. Jonback / Lewis, E. / Muhammad, B. / Nelson, C. / Que, J.
Produced by: Bloodshy & Avant
Guitar: Bloodshy & Avant
Keyboards: Bloodshy & Avant