Here is my improvisation with only four pitches. It was really exciting to do this, because I understood that really beautiful music can be made with so few pitches. Also it wasn't so easy to control myself to play only these sounds on the organ, I wanted to play the others too, for example E (I don't know why).
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Thanks for your entry. Great playing. Minimal material, maximum results! I think your imitations here are quite wonderful...
Thank you!