Dieterich Buxtehude played a major role in shaping the various types of vocal music in his time. His experience as organist, composer, and director—as well as his extensive knowledge of the contemporary repertoire, including Italian music—made him the most original and significant contributor to the early cantata in northern Germany. On this beautiful CD, Ton Koopman and his Amsterdam Baroque Orchestra & Choir expose the “unknown Buxtehude.”