Instruct: Classify Amazon reviews into positive or negative sentiment
Query: good show!

This is probably the best show of Mariah, with her most popular songs and best voice. Just like another reviewer, I have never got tired of watching this video because of Mariah's emotional performance. It's so pity that I couldn't see this show at live. Concerning the suspicion of "lip-synching", actually i had similar thought when i first enjoyed this show. But later on, i found that it was Mariah's performance so perfect which makes us hard to differentiate between her live performance and in studio! Like other reviewers' suggestion, if you listen to her performance carefully, you'll find that she always used slightly different ways to sing the song.