he played piano for Sorry, So Sorry.
bah i didn't get to meet him. i was more there to hear This Brilliant Dance and the other old songs. i'm not tooo in to his newer ones - they all kinda sound the same to me. But one of my friends was working security, and she doesn't really know DC, and had random conversations with him all day and didn't know it was him until he finally was like "well i'm gonna go play now" :-P