JS Bach spent most of his life in service to the Lutheran church. And as Bill notes, “Bach family members worked as church musicians from the time of Martin Luther to Otto von Bismarck… nearly 400 years.” Yet JS Bach also wrote wonderful, enduring secular music — especially during a five-year period (1717-22) working for Prince Leopold — when he wrote the cello suites, violin sonatas and partitas, and Brandenburg Concertos. Bill chronicles this intensely creative period in the story of JS Bach.