The Most Remarkable Noise

In the computer room in Sebringville we have a door that opens onto the deck in the backyard. At the moment this door is wide open (allowing the dog easier access in and out) through which I can hear birdsong. Moments ago I heard a beautiful sound like bells and birds and maybe alien spacecraft. Utterly unable to place it, I looked out to see that it was a plow tilling the field behind our property. Assorted metal joints must have been squealing against each other, but the result wasn't horrible, as you'd expect. It was lovely.