I was disappointed in his performance because he changed the song up and in my opinion, not for the better.
It's really a beautiful song and if you listen to his CD version, you just may agree with me but I think he ruined it with the changes he made.
But as a mentor, he's been the best mentor I think they've ever had in the 4 years I've watched. He gave the contestants the advice I've been trying to give them through my TV set, lol.
The thing this group of idols lack is a personality that makes you want to hear what they're singing or saying. Adam tried to get them to open up more and I think the ones who listened to him, made some big improvements like Katie for instance.
I really thought she did a great job so I was disappointed to see her go home. She definitely has the pipes which Adam agreed with but she needed to play more to her audience like she did this week.
It's too bad Casey didn't really listen to him. Like Adam said, everything is just there, in one spot. He really needs to bring it up a bit here and there so everything doesn't sound like it's the same note.