Ugh, why do people who are ignorant on the subject feel the need to review it? For plays and musicals they have professional theatre reviewers who have first hand knowledge of all aspects of a show. No random writer would attempt to review a performer in a Broadway show when they don't know what they're talking about. So why does every single person in the media people feel the need to review Michael's performances?! Ugh. It's called marking. When you're rehearsing for the sake of getting the feel of the full show, meaning cues, steps, blocking, music, lights, etc, you don't dance full out, you don't sing full out - you mark it. Marking, in slang terms is half-assing, LoL. You are *supposed* to "half-ass" your voice and your energy to save it for the shows. I think the fact that his run-throughs are so developed is leading this guy to believe that he was performing full out. No, dude. He's just that good.