And now for something completely different. All of the posts to date have featured music from the 20th and 21st Centuries. That's been deliberate: I have an overwhelming fondness for these musics, and I think most of them are neglected and often unfairly maligned as cacophonous and unpleasant to listen to. But they're also not the only good music out there. So today I'm turning to the other side of the Western Art Music common practice, to feature a piece born out of the bitter rivalry between Medieval France and England.