Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Must Have Book for Serious Civil War Musician

If you are a serious Civil War Musician, this is a must have book. I play in a Civil War Band and we use excerpts from this book in our programs we present. Lincoln loved music, and a number of times he requested the US Marine Band (and other bands) to play special music for him. I highly recommend it.