I have been listening to more classical music on Spotify lately, to the extent that one of my auto-generated Daily Mixes is often devoted to it. It came up with the track above over the weekend. I think it is beautiful. The Bach-Werke-Verzeichnis (BWV; lit. 'Bach works catalogue') is a catalogue of compositions by Johann Sebastian Bach. I had no idea. I had to look it up as all I got from Spotify was BWV 974 - 2. Adagio. I am pondering spinning something of my own out of the chord progression.