Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The Hutchinson Concise Dictionary of Music

The Hutchinson Concise Dictionary of Music is a great reference material for all who are interested in music. This dictionary offers exact definitions of musical terms and concepts. It not only gives the definitions, but also background and origin information. It suggests the most common time period for the music and how it relates to other times in history. I recommend this book for both beginning and advance students of music because of its clarity and accuracy of information.