Here it is on Youtube

I think of that dangerous balance as walking on an edge. You want to get up as close as you can without going over. I think even the best performers sometimes do. On one of the best performances I've ever been to (this one), the artist thankfully makes it to the end of the song. People can forgive, and even appreciate an artist who gets so involved in the song. Artists that "phone it in" don't get noticed so much.