Poor Keith must have been really upset, as remember his was the only piece as I remember, they did not show talking about his reaction of not being chosen by Josh Groban.
I have often wondered why, and we now know.

With thanks to the Keith fan twitter peeps who tweeted this link to a performance of ADWD by the Two Josephs (a bit like the Three Tenors, except there are only two of them...and they're Josephs! )

LINKY THING