Superb!
It's good that you captured them from the south side at DX, away from the background noise of commentary and kids. When I saw them at Little Gransden in August, I was so busy photographing them, I didn't really 'take in' and appreciate the sound, and it's only now, six weeks later, after watching your video, that it's 'sunk in' that I saw and heard this fantastic event.
Many thanks for posting that wonderful sight and sound !