Group Medley: "No Diggity" by Blackstreet featuring Dr. Dre & Queen Pen/"Shout" by Tears For Fears
Florence + the Machine Song: "Spectrum"
(Note: I think L.A. Reid's doing some of the voiceover intros for the first season.)
The last act to fall just short of being a finalist is...
Marcus
Chris
Melanie
Josh
...Marcus.