Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A Thorough Workout!!

Having seen and done almost every workout tape available to mankind, I was pleasantly surprised by the NYC Ballet Workout tape. I used to take jazz dance class and many of the moves were familiar to me. They are simple and really give you a good workout. I sweat more than I did doing 30 minutes on a stationary bicycle. After the workout, which goes by really fast, I felt good that I actually stuck to it to the end and I didn't feel worn down and beat and I am looking forward to doing it again! This tape brought back very happy memories of my dance classes and it was probably the best investment I've made in a workout tape in a VERY long time.