"Black Key" Etude, Op. 10, No. 5

On these albums

The Moog Strikes Bach... (To Say Nothing Of Chopin, Mozart, Rachmaninoff, Paganini And Prokofieff)Hans Wurman · 1969

Source: MusicBrainz recording e2beccc7-ad46-4fae-b171-75bb8617708d (CC0).