This is a pretty weird niche game, but I love it! My best decription would be "LSD Dream Simulator, but you also have a recorder and a mixing desk to create Musique concrète compositions."
A very creative and elaborate take on the Cartridge!
However, I have to admit that the gameplay mechanics are probably less intuitive to people who don't work with audio recorders, editors and sequencers. A little manual or tutorial would probably be helpful. And the "flange" effect is a bit drastic compared to classic tape flanging sounds or BBD flanger pedals. Sounds more like a vibrato to me.