Instruct: Classify Amazon reviews into positive or negative sentiment
Query: What you hear is what . . .?

Music exists as it is being heard. Looking more closely at who is hearing the music and how they receive it along with who is delivering the music and for what reasons adds an often neglected, yet vital aspect of music performance and history. Karen Ahlquist's book is a wonderfully readable addition to literature about history and opera; she provides us with a fascinating look at music and people in a specific time and place.