Britney Spears - Blackout

Backing Vocals [Additional] – Keri HilsonEdited By [Additional Editing] – Ron Taylor Mixed By – Marcella "Ms. Lago" Araica*Mixed By [Assisted By] – Mike SnowProducer – DanjaProducer [Vocal Production] – Jim Beanz, Keri HilsonProgrammed By [Additional Programming] – Marcella "Ms. Lago" Araica*Recorded By – Marcella "Ms. Lago" Araica*Recorded By [Assisted By] – Valente*Vocals [Additional], Backing Vocals – Jim BeanzWritten-By – J. Washington*, K. Hilson*, M. Araica*, N. Hills*

Backing Vocals – Robyn Carlsson*Bass [Additional] – Klas ÅhlundGuitar [Additional] – Henrik JonbackKeyboards, Programmed By, Bass, Guitar – Bloodshy & AvantMixed By – Niklas FlycktProducer – Bloodshy & AvantRecorded By – Bloodshy & AvantWritten-By – C. Karlsson*, K. Åhlund*, P. Winnberg*

Backing Vocals – Candice NelsonBass, Guitar – Henrik JonbackCo-producer – The ClutchEngineer – Jim Carauna*Keyboards, Programmed By, Bass [Additional], Guitar – Bloodshy & AvantMixed By – Niklas FlycktProducer – Bloodshy & AvantRecorded By – Bloodshy & AvantWritten-By – B. Muhammad*, C. Nelson*, C. Karlsson*, E. Lewis*, H. Jonback*, J. Que*, P. Winnberg*

Backing Vocals [Additional] – Keri HilsonEdited By [Additional Editing] – Ron TaylorProducer – DanjaProducer [Vocal Production] – Jim BeanzProgrammed By [Additional Programming] – Marcella "Ms. Lago" Araica*Recorded By – Marcella "Ms. Lago" Araica*Recorded By [Assisted By] – Mike SnowVocals [Additional], Backing Vocals – Jim BeanzWritten-By – J. Washington*, K. Hilson*, M. Araica*, N. Hills*

Backing Vocals – Nicole MorierMixed By – Tony MaseratiProducer – Freescha, Kara DioGuardiProducer [Vocal Production] – Kara DioGuardiRecorded By [All Music], Performer [All Music] – FreeschaRecorded By [Vocals] – Brian PaturalskiWritten-By – M. McGroarty*, N. Huntington*, N. Morier*

Backing Vocals – Corte "The Author" Ellis*Edited By [Additional Editing] – Ron TaylorEdited By [Additional Pro Tools Editing], Effects [Digital Effects] – Devine EvansProducer – DanjaProducer [Vocal Production] – Jim BeanzProgrammed By [Additional Programming By] – Marcella "Ms. Lago" Araica*Recorded By [Assisted By], Mixed By [Assisted By] – Mike SnowRecorded By, Mixed By – Marcella "Ms. Lago" Araica*Written-By – C. Ellis*, M. Araica*, N. Hills*

Backing Vocals – Candice Nelson, Ezekiel LewisBass, Guitar – Henrik JonbackCo-producer – The ClutchEngineer – Jim Carauna*Keyboards, Programmed By, Bass [Additional], Guitar – Bloodshy & AvantMixed By – Niklas FlycktProducer – Bloodshy & AvantRecorded By – Bloodshy & Avant, The ClutchWritten-By – B. Spears*, C. Karlsson*, E. Lewis*, H. Jonback*, J. Que*, P. Winnberg*

Backing Vocals – Sean GarrettCo-producer – Sean "The Pen" Garrett*Keyboards, Programmed By, Bass, Guitar – Bloodshy & AvantMixed By – Niklas FlycktProducer – Bloodshy & AvantProgrammed By [Additional Programming] – MangoRecorded By – Bloodshy & AvantRecorded By [Assisted By] – Rob SkipworthWritten-By – C. Carlsson*, M. Wallbert*, P. Winnberg*, S. Garrett*

Arranged By – T-PainBacking Vocals [Additional] – Windy WagnerEdited By [Additional Editing] – Ron TaylorMixed By – Marcella "Ms. Lago" Araica*Mixed By [Assisted By] – Miguel Bustamante, Mike SnowProducer – DanjaProducer [Vocal Production] – Jim BeanzRecorded By – Marcella "Ms. Lago" Araica*Recorded By [Assisted By] – Mike SnowVocals [Additional], Backing Vocals – Jim Beanz, T-PainWritten-By – M. Araica*, N. Hills*, T-Pain

Backing Vocals – Kara DioGuardiGuitar, Bass – Erick Coomes*Keyboards, Guitar – Fredwreck*Mixed By – Tony MaseratiMixed By [Assisted By] – Michael Houge*Producer – "Fredwreck" Farid Nassar*, Kara DioGuardiRecorded By – Brian Paturalski, Mike Houge, Richard "Segal" HurediaWritten-By – B. Spears*, E. Coomes*, F. Nassar*, K. DioGuardi*

Backing Vocals [Additional] – Keri HilsonEdited By [Additional Editing] – Ron TaylorProducer – DanjaProducer [Vocal Production] – Jim BeanzRecorded By – Marcella "Ms. Lago" Araica*Recorded By [Assisted By] – Mike SnowVocals [Additional], Backing Vocals – Jim BeanzWritten-By – J. Washington*, K. Hilson*, M. Araica*, N. Hills*

Backing Vocals – Pharrell WilliamsMixed By – Chad Hugo, Supa Engineer Duro*Mixed By [Assisted By] – Jordan "DJ Swiwel" Young*Producer – The NeptunesRecorded By – Brian GartenRecorded By [Additional Recording By] – Jordan "DJ Swiwel" Young*Recorded By [Assisted By] – Hart Gunther, Ryan KennedyWritten-By – P. Williams*