Thanks for sharing that! Always though those were cool as heck. Tried to get decent at stringed instruments and keyboard for many years and finally gave up. My fingers are just too fat and short to ever be fast and proficient at it. Had to stick to sticks and percussion.(pun not really intended) lol :)
I hear the improvised lead riffs and melodies of sustained notes in my head though. This is why I am going to try out the Theremin. I do have an old tube tube amp that might allow proper pushed feedback if I set it up right.