It reminded me of watching The Chart Show back in the early 90s when the three specialist charts (rock, dance and indie) would rotate and I'd eagerly anticipate the indie week. Back then alot of the indie (and dance) acts couldn't afford to make videos so The Chart Show would play their song accompanied by a swirling graphic. My Bloody Valentine were very much of that era (of a supposed scene and sound given the name "shoegazing") and whilst they evidently did have some videos, they weren't that much different from The Chart Show's graphics.
The music and the visuals last night took me back to those Saturday mornings in my teenage years.
This is what it looked like, and it sounded just like it looks.
It was ethreal, blurry and above all else incredibly noisy. My ears are still ringing now from the blaze of feedback that ended the show.