...resulting from an unexpected juxtaposition of musical material. As I was driving about doing errands, I listened to the local classical music station and, unsurprisingly, there were various sorts of Christmas carols playing. Just as I was about to arrive home, the current "Joy to the World" instrumental rendition was suddenly commingled with the very first Bach invention I learned to play (the one in F major, #9 perhaps?). It fit ridiculously well. Yay, Bach.