The bass range is more pronounced than it sounds here in the video. There are four frequency adjustment controls, a pattern changer control, tempo control, switches for two photo resistor sensors that react to light/dark in a Thermin-like fashion. Check this out: kzbin.info/www/bejne/fXfWi5Klf8mVhassi=0B4nLnrVxu-IvpId kzbin.info/www/bejne/rXrNfayam9imgK8si=BYb2PiTZJGrIZ9cw