What luck! I have looked through old DVDs of my former companies and on one was a video of me from 1985 (i.e. before I founded my first company), which I had made for my then employer beta-technik in Unterföhring/Munich.
I was the studio manager of the graphic/effect direction there. To present the possibilities of a particularly complicated and then completely new device to the editors, I created a simple demoband with real-time effects and now it comes: I backed it up with a combination of some of my music.
Here is the video, the first piece of music had been lost since then. Now I have isolated it and included it in the archive: