I didn't watch any of the first season of AI and almost none of the second season, so believe it or not, I've never seen Clay perform.
But I did listen to a clip of one of his songs online recently and he was great.
Anthony is a little darling and I hope he does really well.
I missed most of Season 1, but got to see the last few.
Do a search on Clay Aiken on Google, and you'll find all sorts of audio and video downloads. I don't have the links here, but remind me and I'll try to track some down if you'd like. I took my son to see Clay's Christmas concert, and we were both blown away.
(buffing nails) He was one I noticed in the audition shows right away, just because of his voice and positive attitude. :-)
On Yahoo! Groups you can find mp3s of his performances from AI.