Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A "must-have" book. Expensive but invaluable.

There is simply no other book available today on this subject that can compare. Every library and serious professional needs to own a copy. Put it on the shelf with the priceless (and long out of print) "Stage Design Throughout The World" series. Included are hundreds of illustrations of the work of the best American theatre designers: undeniably the most influential and dynamic designers in world theatre during this period. It illustrates what is likely to be known as the high-water mark of American theatrical design. Anyone who has ever done compelling design work in the theatre is here. Students, professionals and amateurs, indeed, anyone who loves the performing arts, will devour it at one sitting then browse with deepened pleasure over a lifetime. A "must have." Get it before it goes out of print!