Instruct: Classify a review into positive or negative sentiment.
Query: Inspiring

When you're an aspiring singer, you need inspiring and encouraging material. If you're a technical person, then books and research and techniques do it for you. This book provides some good thoughts, insight, techniques, and inspiration. Especially good are the parts on mental attitude and determining the type of singer you are. (most likely technical instead of emotional if you're looking at this book) Just face it, you can be as good a technical singer as you can be emotional if your heart is in the right place.