Emerson wrote a wonderful interpretation of Ginastera Piano Concert 2 (2nd part, Tocatta). Many years ago there was a very interesting place in Moscow -- the Studio of Experimental and Electronic music (in Skriabin Museum basement)) ). There I've heard it for the first time - with color effects and ballet dancer. It is one of the most great and inerasable remembrances in my life )) In this studio E. Denisov and S. Gubaidulina wrote some pieces for Murzin's ANS synthesizer. They worked hard spending days and nights there. Some result were published later on LP. To my mind, Gubaidulina's "Vivente - Non vivente" for ANS is a real masterpiece. May be you'll like it too.
Sorry if it was an off-top. Thank you for your posts! You've represented here a lot of very interesting music!

Emerson, Lake & Palmer? Группа выдающаяся была. Интересно. В первой части что-то от Мусоргского - Быдло.