It's a program called BEEPER (which is a pointer driven program to experiment with BEEP sound settings).
I got playing with it and thought to myself, this looks like something I might have written. Oh heck, sure enough, it was. From 2010.
"I don't remember writing this" was what went through my mind, erk, I honestly don't remember writing it



Anyway, TMD2003 might like to know its output will be used in an entry for the c**p games competition....