Wow, there are multiple things like that! Qweremin: C64 Theremin: https://linusakesson.net/hardware/theremin/index.php https://linusakesson.net/hardware/therem

Wow, there are multiple things like that! Qweremin: C64 Theremin: https://linusakesson.net/hardware/theremin/index.php https://linusakesson.net/hardware/theremin/index.php Qwertar: C64 Keytar: https://linusakesson.net/music/glyptodont-live/index.php https://linusakesson.net/music/glyptodont-live/index.php Very neat!