Edge helped close the conference Saturday night by performing at least one song ("Ordinary Love") inside the Sistine Chapel. Those in attendance were saying that it's the first contemporary music performance inside the famous building, which opened in 1483. Here's a short clip of Edge's performance.
UPDATE: NBC News reports Edge also played "Yahweh," "Walk On" and Leonard Cohen's "If It Be Your Will." A young Irish choir joined him with backing vocals. Edge said, "When I was asked to perform in the Sistine Chapel I didn't know what to say, because usually there's 'this other guy' who sings (referring to Bono) ... So it took me at least, well, 30 seconds to agree to it."