Glen went onto create a video for Peter Gabriel in 2003 for his track "The Drop" and recently completed Music is Math which he describes as follows:
This is the HD and finished version of my video ‘Music Is Math’. I just let the program run till the end of the music, I felt reluctant to interfere too much by trying to sculpt an ending, and just let the code run its own natural course.
Butterfly: Glen Marshall Computer Art
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Music is Math. Cartoon Brew (Source)