Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The Real Music History

This is the finest, most complete "true" history of music that I have ever read. If you have taken music history classes and this text was not included, your classes have led you into an instrumentally dominated world of delusion. If you want to know the truth behind the development of music outside the instrumental track, this book is a must. Learn the truth about the domination of singers from the dawn of the professional singer in the late 16th century to the dominance of the singer throughout history up to today. This is the type of knowledge that music historians in general do not want you to know!!