Imagine
performed by Adam Lambert, Angelique Kidjo, Ban Ki-moon, Cody Simpson, Courteney Cox, Daniela Mercury, David Arquette, David Guetta, Idris Elba, Katy Perry, Lance Bass, Nicole Scherzinger, Nina Dobrev, Priyanka Chopra, Rumer Willis, Seth Green, Taye Diggs, will.i.am, and Yuna Kim
(Song)