Here is the Sonate, opus 31, for cello and piano, as performed by the Gofriller solo cello.
Sadly, I had to alter a sequence of mixed natural and artificial harmonics, and it sort of throws the melody off-balance at one point (and the obsessive compulsive composer that I am, I'm sure that EVERYone will notice the glaring fault in that line!!! boy, paranoia works wonders on composers). I had to do this because the Gofiller only has sampled the natural harmonics, playable on the instrument. Too bad.
I've posted this piece before, but here we get to hear a considerably more natural performance.
The form, for those interested in that sort of thing:
Theme: a sonata allegro exposition, two main elements, Allegro, followed by Lento.
variation 1: Lento e rubato
variation 2: Più mosso
variation 3: Molto rubato (cadenza)
variation 4: Più mosso
variation 5: Tempo giusto (Fuga)
variation 6: Adagio
variation 7: Allegro
(I noticed, while listening to this, that the volume on the cello is a tiny bit low, I'll rerecord it soon and update the file)