Cooper III ( cellist) and Jennifer Lorenzo ( cellist) keyboard: Jeff Bhasker viola: Davis Barnett and Alexandra Leem violin family: Olga Konopelsky, Emma Kummrow, Luigi Mazzochi ( Violinist), Charles Parker ( violinist), Igor Szwec and Gregory Teperman background vocals: Mr Hudson and Tony Williams ( soul/R&B singer/writer) vocals: The Kadockadee Kwire conductor: Larry Gold strings arranger: Larry Gold recording of: Say You Will lyricist and composer: Jeff Bhasker, Dexter Raymond Mills Jr.
Assistant recording engineer: Chad Carlisle, Isha Erskine, Gaylord Holomalia and Christian Mochizuki recording engineer: Andrew Dawson ( US mix engineer) and Anthony Kilhoffer assistant engineer: Rick Friedrich, Montez Roberts and John Stahl engineer: Jeff Chestek producer: Kanye West assistant mixer: Erik Madrid and Christian Plata mixer: Manny Marroquin bass: Miles Davis ( jazz trumpeter, bandleader, songwriter) cello: James J.