Baritone Saxophone – Ian Hendrickson-Smith Bass – Mark Ronson Engineer [Engineered For Mix] – John Hanes Guitar – Josh Man , Mark Ronson , Thomas Brenneck Mixed By – Serban Ghenea Organ, Performer [Rhythm Track] – Bloodpop Percussion – Este Haim , Lady Gaga Producer – Bloodpop , Lady Gaga , Mark Ronson Recorded By – Benjamin Rice , Joshua Blair Recorded By [Assistant] – Barry McCready , David "Squirrel" Covell *, Justin Smith Tenor Saxophone – J. Gastelum Cochemea * Trumpet – Brian Newman (4) , Dave Guy Written-By – Hillary Lindsey , Mark Ronson , Mr. Tucker *, Stefani Germanotta

Bass, Guitar, Strings [Mellotron] – Mark Ronson Guitar – Harper Simon Keyboards – Bloodpop , Mark Ronson Mixed By – Tom Elmhirst Mixed By [Assistant] – Brandon Bost , Joe Visciano Percussion – Lady Gaga Performer [Rhythm Track] – Bloodpop Producer – Bloodpop , Lady Gaga , Mark Ronson Recorded By – Dave Russell , Joshua Blair , Justin Smith Recorded By [Assistant] – David "Squirrel" Covell *, Johnnie Burik Written-By – Mark Ronson , Stefani Germanotta

Bass- Mark Ronson Drums – Josh Homme Guitar – Josh Man , Mark Ronson Mixed By – Tom Elmhirst Mixed By [Assistant] – Brandon Bost , Joe Visciano Performer [Rhythm Track], Synthesizer – Bloodpop Producer – Bloodpop , Lady Gaga , Mark Ronson Recorded By – Joshua Blair Recorded By [Assistant] – Barry McCready , Charley Pollard *, David "Squirrel" Covell *, Justin Smith Written-By – Josh Man , Mark Ronson , Mr. Tucker *, Stefani Germanotta

Engineer [Engineered For Mix] – John Hanes Guitar – Mark Ronson Mixed By – Serban Ghenea Performer [Rhythm Track], Synthesizer – Bloodpop Producer – Bloodpop , Lady Gaga , Mark Ronson Recorded By – Joshua Blair Recorded By [Assistant] – Barry McCready , David "Squirrel" Covell * Written-By – Beck Hansen , Mark Ronson , Mr. Tucker *, Stefani Germanotta

Bass- Bloodpop Drums – Kevin Parker (2) Engineer [Engineered For Mix] – John Hanes Guitar – Josh Man , Kevin Parker (2) , Mark Ronson Mixed By – Serban Ghenea Performer [Rhythm Track] – Bloodpop Producer – Bloodpop , Kevin Parker (2) , Lady Gaga , Mark Ronson Recorded By – Joshua Blair Recorded By [Assistant] – Barry McCready , David "Squirrel" Covell *, Justin Smith Synthesizer – Bloodpop , Kevin Parker (2) , Mark Ronson Written-By – Kevin Parker (2) , Mark Ronson , Mr. Tucker *, Stefani Germanotta

Bass- Mark Ronson Guitar – Hillary Lindsey , Mark Ronson Keyboards, Performer [Rhythm Track], Programmed By [String Programming] – Bloodpop Mixed By – Tom Elmhirst Mixed By [Assistant] – Brandon Bost , Joe Visciano Piano – Lady Gaga Producer – Bloodpop , Lady Gaga , Mark Ronson Recorded By – Brandon Bost , Joe Visciano , Joshua Blair Recorded By [Assistant] – Barry McCready , David "Squirrel" Covell * Vocals [Additional] – Hillary Lindsey Written-By – Hillary Lindsey , Mark Ronson , Stefani Germanotta

Backing Vocals – Hillary Lindsey Bass- Nick Movshon Drums – Homer Steinweiss Guitar – Thomas Brenneck Keyboards, Mellotron – Leon Michels Mixed By – Tom Elmhirst Mixed By [Assistant] – Brandon Bost , Joe Visciano Piano – Victor Axelrod Producer – Bloodpop , Lady Gaga , Mark Ronson Recorded By – Jens Jungkurth , Joshua Blair , Justin Smith , Matthew Cullen Recorded By [Assistant] – Abby Echiverri , David "Squirrel" Covell *, Ed McEntee Slide Guitar – Josh Man , Sean Lennon Synthesizer, Performer [Rhythm Track] – Bloodpop Written-By – Josh Tillman *, Mark Ronson , Stefani Germanotta Thomas Brenneck

Baritone Saxophone, Tenor Saxophone, Alto Saxophone – James King Bass, Guitar – Mark Ronson Drums – Brent Kolatalo , Ken Lewis Drums, Synthesizer [Additional Synths] – Emile Haynie Mixed By – Tom Elmhirst Mixed By [Assistant] – Brandon Bost , Joe Visciano Piano, Backing Vocals – Lady Gaga Producer – Bloodpop , Emile Haynie , Lady Gaga , Mark Ronson Programmed By [Synthesizer] – Bloodpop Recorded By – Brent Kolatalo , Joshua Blair , Ken Lewis Recorded By [Assistant] – Barry McCready , David "Squirrel" Covell * Written-By – Emile Haynie , Josh Tillman *, Stefani Germanotta

Bass- Nick Movshon Cello – Kelsey Lu Drums – Homer Steinweiss Featuring – Florence Welch Guitar – Jack Byrne (3) , Thomas Brenneck Harp – Tom Moth Mixed By – Tom Elmhirst Mixed By [Assistant] – Brandon Bost , Joe Visciano Performer [Rhythm Track] – Bloodpop Piano – Lady Gaga Producer – Bloodpop , Lady Gaga , Mark Ronson Recorded By – Brett "123" Shaw *, Jens Jungkurth , Joshua Blair Recorded By [Assistant] – Chris Claypool , Christopher Cerullo , David "Squirrel" Covell *, Michael Harris (10) Synthesizer – Victor Axelrod Vocals – Florence Welch Written-By – Florence Welch , Mark Ronson , Stefani Germanotta

Drums, Keyboards – Bloodpop Mixed By – Ben Baptiste Piano – Lady Gaga Producer – Bloodpop , Lady Gaga , Mark Ronson Recorded By – David "Squirrel" Covell *, Joshua Blair Recorded By [Assistant] – Barry McCready , Justin Smith Strings [Mellotron] – Mark Ronson Written-By – Nadir Khayat , Stefani Germanotta

Bass- Mark Ronson Guitar – Anthony Rossomando Mixed By – Tom Elmhirst Mixed By [Assistant] – Brandon Bost , Joe Visciano Performer [Rhythm Track], Synthesizer – Bloodpop Producer – Bloodpop , Lady Gaga , Mark Ronson Recorded By – Benjamin Rice , David "Squirrel" Covell *, Joshua Blair Recorded By [Assistant] – Barry McCready Vocals [Additional] – Hillary Lindsey Written-By – Hillary Lindsey , Mark Ronson , Mr. Tucker *, Stefani Germanotta

Drums- Homer Steinweiss Guitar, Bass, Keyboards – Mark Ronson Mixed By – Ben Baptiste Piano – Lady Gaga Producer – Lady Gaga , Mark Ronson Recorded By – Barry McCready , Joshua Blair , Riccardo Damian Recorded By [Assistant] – Barry McCready Saxophone – Steve Kortyka Trumpet – Brian Newman (4) Written-By – Stefani Germanotta

Mixed By – TI Jakke *, RedOne Piano – Lady Gaga Producer – Lady Gaga , Red One * Programmed By, Guitar – RedOne Recorded By – Alex Von Korff , Trevor Muzzy Written-By – Nadir Khayat , Stefani Germanotta