One can create animated quadrature art by connecting the left channel of two-channel audio recordings to the X axis of an oscilloscope, and by connecting the right channel to the Y axis of the oscilloscope. I will begin to experiment with this in the next few days.
You mean the Lissajous patterns?
A colleague showed them to me some time ago. Fun to watch
Here is a link to some quadrature art code that I will soon be using on my website. This code is a work in progress. My website will let people use their browsers to play music files that are on the visitor’s computer.