Bach-Schubert, take 5
I revisited the Bach-Schubert piece yet again. This is a collage of the two pieces:

Bach's chorale prelude "Ich ruf' zu dir" (organ performance by S. Didenko), see also its piano arrangement by F. Busoni,

and

Schubert's Impromptu Op. 90 no.3.

There are some minor changes to the score.

This time I've used the MIDI recording feature of my Yamaha Clavinova, and edited the MIDI file slightly to get rid of wrong notes. Then I played it back through Yamaha and recorded the audio. The results are better but, of course, still far from ideal.

Audio
MIDI