wow. THAT was unexpected!
I've seen him sing before. Jason had his own TV show and Alfie Boe was a guest on it. Matt Lucas and Alfie were scheduled to sing 'The Impossible Dream' together but at the last minute Matt was ill and so Jason sang his part. I think everyone thought he would "gag" his way through and he surprised us all. He has an amazing voice and I hope we hear more of it in the future.