Despite not really having much I didn't know, the talk was entertaining. And there were plenty of recordings to listen to. I have only two complaints:
1) Wyatt often talked over the music, which was okay when he was pointing out something to listen for, but less okay when he was simply gushing about how wonderful it was.
2) He went on for 2 1/2 hours - and the seats in the auditorium were not comfortable enough for that.