Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Bach Insights by Great Theologian

Jaroslav Pelikan was one of the most prominent theologians and historians of early Christianity until his recent death in 2006. His insights into the theological currents of J.S.Bach's era are deep and tied closely to the texts in the church cantatas, passions and B Minor Mass. As a Lutheran (at least until his late conversion to the Eastern Orthodox church) and historian of the Reformation his view of these issues is invaluable. His knowledge of Bach's music is comprehensive and this book benefits from this unique combination. His explanation of Bach's Pietist sympathies, or lack thereof, is of particular interest. This book should be read by anyone who loves the music of Bach.