Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great Book for Adult Organists

This book contains great information about stops and registers, has good beginning pedal and keyboard exercises, and increasingly difficult preludes and practice pieces by well- known composers. It does increase in difficulty rapidly, however, so it is better for someone already advanced in piano abilities, and not younger students. Some of the pieces have trills, etc. that make it a challenge for someone just in terms of the handwork...throw in pedals and you are asking a lot of a beginning organist! For that reason I have given it four stars instead of five. If you are a competent pianist wanting to branch out to the organ, you will love this book.