My purpose here is to propose an intermediate version
of this beautiful impromptu of Schubert. That's why
I've put it in G instead of Gb (not because it would be
easier to play but because it's easier to read) and
most of all I've reduced it to 3 pages (instead of
around 10). An interesting point is that this piece is
also very nice if it is played slow (I've put two MP3:
one at a medium speed around 126 and one really slow at
around 80)