Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A Good Introduction for non-Dead Heads

If you think that the Grateful Dead were all about interminable instrumental noodling and out-of-tune singing, this might introduce you to how sharp the Dead really could be on a good night. It's dynamic and well-focused; melodic concise songs, gentle ballads, hard rockers, well sung and beautifully played.If you are a Dead Head, you'll find it as enjoyable as I do. An enjoyable two-and-a-half hours.