Just a warning...don't turn the volume up too loud on this. I think he needed a lower key to begin with. I would have loved to see the pianist's facial expression while this was going on. Maybe they deliberately kept doing key changes upwards to see how high he would go before giving up.
The caption on youtube: "anytime you sing for God it doesn't matter how you sound but...."
Indeed. Singing with enthusiasm is fine. But perhaps not in front of everyone.