Eminem performs Airplanes with B.o.B & Hayley Williams, then they both leave and Rihanna enteres and they perform LTWYL. Then, Eminem leaves and various artists, featured and not featured on "All of the Lights" enter and start singing the song.
Then, when they sing loud "turn on all of the lights", suddenly everything goes dark and quiet, and you can hear GaGa's voice continuing the song, which slowly turns into "Telephone" acapella, with Beyonce entering the scene and the lights go on with only GaGa and Beyonce on the center of the stage performing Telephone.