8. Carrie Underwood With U2's the Edge
World AIDS Day (RED) Concert, December 1st
When U2 lead singer Bono injured himself in a bicycle accident and was unable to appear at this pop-up concert in Times Square, he personally invited several of his pals to perform in his place, including Bruce Springsteen, Kanye West and Chris Martin of Coldplay. Underwood was an inspired choice, as was her song "Change," an album cut from 2009's Play On. Accompanied by the gentle strumming of the Edge, and her touring guitarist Shawn Tubbs, Underwood gave an impassioned reading of the ballad, which directly, and artfully, addresses compassion fatigue and challenges the notion that one person is an ineffective agent for change. We're betting Bono approved.