LIST OF SOLOISTS:Adam LevineAkonAl JardineAnn WilsonAnthony HamiltonAR RahmanBarbra StreisandBebe WinansBenji MaddenBrandyBrian WilsonBusta RhymesCarlos SantanaCeline DionEnrique IglesiasErica CampbellEthan BortnickFaith EvansFarnsworth BentleyFergieT-PainFreda PayneGladys KnightHarry ConnickII TrioIndia ArieIsaac SladeJamie FoxxJanet JacksonJason MrazJeff BridgesJennifer HudsonJennifer NettlesJimmy Jean-LouisJoe JonasJoel MaddenJordan SparksJosh GrobanJ.R.Julianne Hough, Justin BieberKanye WestKatherine McPheeKeith HarrisKeri HilsonKevin JonasKid CudiKristian BushLil WayneLionel RichieMary J BligeMelonie FionaMichael JacksonMiley CyrusMusiq SoulchildMyaNancy WilsonNatalie ColeNick JonasNicole RichieNicole ScherzingerNikka CoastaOrianthiPatti AustinPhillip BaileyPinkPlain PatQuincy JonesRalph JohnsonRandy JacksonRaphael SaadiqRashida JonesRedOneRickey MinorRob ThomasRobin ThickeSean GarrettSnoop DoggTaj JacksonTaryll JacksonTina CampbellTJ JacksonToni BraxtonTony BennettTrey SongzTyrese GibsonUsherVerdize WhiteVince VaughnWill.I.AmWyclef JeanZac Brown