Administrator [Union Contract Administrator] – Ivy Skoff Arranged By – Hugo Leclercq Arranged By [Bass] – Lady Gaga , Nick Monson Co-producer – Hugo Leclercq Guitar – Tim Stewart (3) Mastered By – Gene Grimaldi Mixed By – Manny Marroquin Mixed By [Assistant] – Chris Galland Delbert BowersProducer – Lady Gaga Producer [Additional] – Nick Monson Recorded By – Dave Russell Recorded By [Additional Recording, Assistant] – Benjamin Rice * Recorded By [Additional Recording] – Bill Malina , Ghazi Hourani Synth [Parts] – Hugo Leclercq , Nick Monson Written-By – Dino Zisis , Hugo Leclercq , Lady Gaga , Nick Monson , Paul "DJ White Shadow" Blair *, Sun Ra

Mastered By – Gene Grimaldi Mixed By – Zedd Mixed By [Wizard] – Jesse Taub , Ryan Shanahan Producer – Lady Gaga , Zedd Recorded By – Dave Russell Recorded By [Assistant] – Benjamin Rice * Voice [Instructional Voice] – Sonja Durham Written-By – Anton Zaslavsky , Lady Gaga

Administrator [Union Contract Administrator] – Ivy Skoff Arranged By [Guitar] – Lady Gaga , Nick Monson Bass Guitar – Donnie Lyle Guitar – Tim Stewart (3) Mastered By – Gene Grimaldi Mixed By – Dave Russell Mixed By [Additional Mixing, Assistant] – Benjamin Rice *, Ghazi Hourani Mixed By [Additional] – Bill Malina , Dino "SpeeedoVee" Zisis * Producer – Lady Gaga , Paul "DJ White Shadow" Blair * Producer [Additional] – Dino Zisis , Nick Monson Programmed By [Additional] – Rick Pearl Recorded By – Benjamin Rice *, Bill Malina , Dave Russell Recorded By [Additional] – Ghazi Hourani Recorded By [Assistant] – Andrew Robertson (8) , Austin Thomas , Benjamin Rice *, Daniel Zaidenstadt Written-By – Lady Gaga , Martin Bresso , Paul "DJ White Shadow" Blair *, William Grigahcine

Administrator [Union Contract Administrator] – Ivy Skoff Backing Vocals – Lyon Gray , Natalie Ganther , Nichole Ganther * Co-producer – Dino Zisis , Nick Monson Featuring – IT , Too $out *, Twista Mastered By – Gene Grimaldi Mixed By – Manny Marroquin Mixed By [Assistant] – Chris Galland Delbert BowersProducer – Lady Gaga , Paul "DJ White Shadow" Blair * Programmed By – Rick Pearl Recorded By – Benjamin Rice *, Bill Malina , Dave Russell Recorded By [Additional] – Daniel Zaidenstadt , Elliot Carter Recorded By [Assistant] – Benjamin Rice *, Daniel Zaidenstadt , Ghazi Hourani Written-By – Clifford Harris Jr. *, Dino Zisis , Lady Gaga , Nick Monson , Paul "DJ White Shadow" Blair *, Too Short , Twista

Administrator [Union Contract Administrator] – Ivy Skoff Arranged By, Instrumentation By – Joanne Tominaga * Co-producer – Dino Zisis , Nick Monson Guitar – Doug Aldridge *, Tim Stewart (3) Horns – Bijon S. Watson *, Kevin Williams (3) , Leon H. Silva , Sean C. Erick * Mastered By – Gene Grimaldi Mixed By – Dave Russell Mixed By [Additional Mixing, Assisted By] – Benjamin Rice *, Ghazi Hourani Mixed By [Additional Mixing] – Bill Malina Producer – Lady Gaga , Paul "DJ White Shadow" Blair * Programmed By [Additional] – Rick Pearl Recorded By – Dave Russell Recorded By [Additional] – Bill Malina Recorded By [Assistant] – Andrew Robertson (8) , Benjamin Rice * Written-By – Dino Zisis , Lady Gaga , Nick Monson , Paul "DJ White Shadow" Blair *

Administrator [Union Contract Administrator] – Ivy Skoff Arranged By [Backing Vocals], Arranged By [Piano] – Lady Gaga Arranged By [Guitar] – Lady Gaga , Nick Monson Backing Vocals – Lyon Gray , Natalie Ganther , Nichole Ganther * Co-producer – Dino Zisis , Nick Monson Mastered By – Gene Grimaldi Mixed By – Dave Russell Mixed By [Additional Mixing, Assisted By] – Benjamin Rice * Mixed By [Additional Mixing] – Dino "SpeedoVee" Zisis * Producer – Lady Gaga , Paul "DJ White Shadow" Blair * Programmed By [Additional] – Rick Pearl Recorded By – Benjamin Rice *, Dave Russell Recorded By [Assistant] – Benjamin Rice *, Daniel Zaidenstadt Written-By – Dino Zisis , Lady Gaga , Nick Monson , Paul "DJ White Shadow" Blair *

Administrator [Union Contract Administrator] – Ivy Skoff Arranged By [Backing Vocals] – Lady Gaga Backing Vocals – Lyon Gray , Natalie Ganther , Nichole Ganther * Co-producer – Dino Zisis , Nick Monson Engineer [Mix Engineer, Assistant] – Justin Hergett Engineer [Mix Engineer] – Jon Castelli Mastered By – Gene Grimaldi Mixed By – Tony Maserati Mixed By [Additional] – Dino "SpeedoVee" Zisis * Producer – Lady Gaga , Paul "DJ White Shadow" Blair * Programmed By [Additional Programming, Assisted By] – Benjamin Rice * Programmed By [Additional Programming] – Rick Pearl Recorded By – Benjamin Rice *, Dave Russell Recorded By [Additional Recording, Assisted By] – Benjamin Rice * Recorded By [Additional] – Daniel Zaidenstadt Written-By – Dino Zisis , Lady Gaga , Nick Monson , Paul "DJ White Shadow" Blair *

Mastered By – Gene Grimaldi Mixed By – Zedd Mixed By [Wizard] – Jesse Taub , Ryan Shanahan Producer – Lady Gaga , Zedd Recorded By – Dave Russell Recorded By [Assistant] – Benjamin Rice * Written-By – Anton Zaslavsky , Lady Gaga

Guitar- Pierre-Luc Rioux Instrumentation By, Programmed By – Giorgio Tuinfort , will.i.am * Mastered By – Gene Grimaldi Mixed By – Daddy's Groove Piano – Giorgio Tuinfort Producer – David Guetta , Giorgio Tuinfort , Lady Gaga , will.i.am * Recorded By – George Atkins , Giorgio Tuinfort Recorded By [Assistant] – Sam Biggs Recorded By [Vocals] – will.i.am * Written-By – David Guetta , Giorgio Tuinfort , Lady Gaga , Paul "DJ White Shadow" Blair *, William Adams *

Drum Programming – Hugo Leclercq Guitar – Ricky Tillo Mastered By – Gene Grimaldi Mixed By – Hugo Leclercq , Manny Marroquin Mixed By [Assistant] – Chris Galland Delbert Bowers Producer, Written-By – Hugo Leclercq , Lady Gaga Recorded By – Benjamin Rice *, Dave Russell Recorded By [Assistant] – Andrew Robertson (8) , Benjamin Rice *

Administrator [Union Contract Administrator] – Ivy Skoff Edited By [Digital] – Jason Lader Keyboards – Adam MacDougall , Jason Lader Mastered By – Gene Grimaldi Mixed By – Manny Marroquin Mixed By [Additional] – Andrew Scheps Mixed By [Assistant] – Chris Galland Delbert Bowers Piano – Lady Gaga Producer – Lady Gaga , Rick Rubin Recorded By – Jason Lader , Ryan Hewitt , Sean Oakley Recorded By [Additional Recording By, Assisted By] – Steve Faye Recorded By [Additional Recording By] – Bill Malina Recorded By [Assistant] – Dave "Squirrel" Covell *, Eric Lynn , Joshua Smith Written-By – Dino Zisis , Lady Gaga , Nick Monson , Paul "DJ White Shadow" Blair *

Administrator [Union Contract Administrator] – Ivy Skoff Arranged By [Backing Vocals], Arranged By [Piano], Arranged By [Guitar] – Lady Gaga Backing Vocals – Lyon Gray , Natalie Ganther , Nichole Ganther * Guitar – Tim Stewart (3) Mastered By – Gene Grimaldi Mixed By – Hugo Leclercq , Manny Marroquin Mixed By [Assistant] – Chris Galland Delbert BowersProducer – Hugo Leclercq , Lady Gaga Recorded By – Benjamin Rice *, Bill Malina , Dave Russell Recorded By [Additional Recording, Assisted By] – Andrew Robertson (8) , Benjamin Rice *, Daniel Zaidenstadt , Steve Faye Recorded By [Additional Recording] – Bill Malina , Ghazi Hourani Written-By – Hugo Leclercq , Lady Gaga , Nadir Khayat , Paul "DJ White Shadow" Blair *

Co-producer – Dino Zisis , Nick Monson Mastered By – Gene Grimaldi Mixed By – Dave Russell Mixed By [Additional Mixing, Assisted By] – Bill Malina , Ghazi Hourani Mixed By [Additional Mixing] – Benjamin Rice * Producer – Lady Gaga , Paul "DJ White Shadow" Blair * Programmed By [Additional] – Rick Pearl Recorded By – Dave Russell Recorded By [Assistant] – Andrew Robertson (8) , Benjamin Rice * Written-By – Dino Zisis , Julian Arias , Lady Gaga , Martin Bresso , Nick Monson , Nicholas Mercier , Paul "DJ White Shadow" Blair *, William Grigahcine