( producer), Mike Oldfield, Robert Diggs ( US rapper / producer) and Kanye West Recording engineer: Andrew Dawson ( US mix engineer), Mike Dean ( US "dirty south" hip-hop producer & mix engineer) and Anthony Kilhoffer additional producer: Jeff Bhasker and Mike Dean ( US "dirty south" hip-hop producer & mix engineer) producer: No ID ( producer), The RZA ( US rapper / producer) and Kanye West assistant mixer: Gaylord Holomalia, Phil Joly and Christian Mochizuki mixer: Andrew Dawson ( US mix engineer) and Mike Dean ( US "dirty south" hip-hop producer & mix engineer) cello: Chris “Hitchcock” Chorney cello and keyboard: Jeff Bhasker cello and piano: Mike Dean ( US "dirty south" hip-hop producer & mix engineer) additional vocals: Amber Rose ( American model, recording artist, actress and socialite) and Teyana Taylor background vocals: Nicki Minaj and Justin Vernon phonographic copyright (℗) by: Roc‐A‐Fella Records, LLC (in 2010) samples: In High Places by Mike Oldfield recording of: Dark Fantasy writer: Jon Anderson ( Yes/Jon & Vangelis), Jeff Bhasker, Mike Dean ( US "dirty south" hip-hop producer & mix engineer), Malik Jones, No I.D.