Epic

Stanley Clarke (acoustic guitar, piccolo, bass guitar, synthesizer, tenor), John Robinson (drums), Neil Stubenhauser (electric guitar), George Duke (keyboards), Bobby Lyle (keyboards), Gerald Albright (soprano saxophone, alto saxophone), Paul Jackson Jr. (guitar)

*NSYNC, Gloria Estefan, *NSYNC & Gloria Estefan, Jennifer Lopez, Edwin Bonilla (percussion), Donna Allen (background vocal), Dana Teboe (trombone), James Warren (trombone), Jon Secada (background vocal), George Noriega (background vocal), George Noriega (electric guitar), Aaliyah (background...

The Priests, Fr. Eugene O'Hagan (vocal), Fr. David Delargy (vocal), Fr. Martin O'Hagan (vocal), Coro, The London Oratory School Schola, David Delargy (vocal), Eugene O'Hagan (vocal), Martin O'Hagan (vocal), The Irish Film Orchestra, Olli Cunningham (celeste)

Royal Philharmonic Orchestra

James Horner, Kazu Matsui, Jay Ungar, Tony Hinnigan, Dermot Crehan, Maggie Boyle, Mike Taylor, Thomas Pasatieri, The London Studio Symphony Orchestra, Don Davis

Mike Lang (piano)

The Sing-Off, The Sing-Off Contestants, University of Delaware Deltones, Pentatonix, The Collective, North Shore, Dartmouth Aires, Sonos

The Sing-Off, The Sing-Off Contestants, Pentatonix, Dartmouth Aires, Afro Blue, Delilah, Urban Method, Vocal Point

The Sing-Off, Nota, Committed, Pentatonix, The Backbeats, Delilah, The Backbeats and Delilah, Dartmouth Aires, Afro Blue, Committed and Afro Blue, Street Corner Symphony, North Shore, Sara Bareilles, Ben Folds, Sara Bareilles & Ben Folds, Jerry Lawson, The Sing-Off Contestants, Jerry Lawson and...

The Priests, Fr. Eugene O'Hagan (vocal), Fr. David Delargy (vocal), Fr. Martin O'Hagan (vocal), Coro, The London Oratory School Schola, David Delargy (vocal), Eugene O'Hagan (vocal), Martin O'Hagan (vocal), The Irish Film Orchestra, Olli Cunningham (celeste)

Royal Philharmonic Orchestra

The Sing-Off Contestants, University of Rochester YellowJackets, Delilah, North Shore, The Collective, Dartmouth Aires, Afro Blue, Pentatonix, University of Delaware Deltones, Urban Method, Vocal Point