Best listened to on headphones.
What you're seeing is the amplitude of the left audio channel plotted on the x-axis and the amplitude of the right audio channel plotted on the y-axis.
If that didn't make sense to you, here's a video explanation.

Reminds me of the song Equation by Aphex Twin.

I second the Alva Noto nomination. Actually, it sounds like you might enjoy quite a lot of the releases on Raster Noton.