I have just recently picked up James R. Gaines’ Evening in the Palace of Reason, an account of the meeting in 1747 between Johann Sebastian Bach, the greatest composer who ever lived, and the Prussian emporer Frederick “the Great.” It is a fascinating read, aside from the author’s occasional silly attempts to appeal to bourgeois dolts.
Somewhere along the way, the Actus tragicus, an early work of Bach’s, is mentioned, and I hadn’t recalled ever hearing it before. So I looked it up on YouTube. It is unspeakably beautiful. Here ya go: