A composition for Hot Air/Tight Strings (Kylie Collins and Erica Ball), which they played at Roulette in April 2009.

The video simulates the effect of plugging an audio signal into the video feed of a black-and-white analog television: amplitude becomes brightness, and different frequencies create different interference patterns. (44100 samples per second divided by 30 frames per second is 1470 samples per frame, which I display in a 49-by-30 rectangle. Also, I superimpose the stereo channels: left is green, right is blue).

Tools used: SoX, Python, PIL. See classicalconvert.com/2008/04/how-to-visualize-music-using-animated-spectrograms-with-open-source-everything/ for the basic idea, though my visualization is somewhat simpler (it doesn't use spectral analysis).