Please help: Schubert D493 for piano solo?

[johsm]

I absolutely love this piece, here is the original version for voice and piano:
 

And I love the version for piano solo which Gulda played, here is a video:
 

But I am not sure what version he plays there. The only transcriptions for piano I know are the two found on IMSLP, one by Liszt which is completely different
and this one by August Horn:
  https://imslp.org/wiki/Special:ReverseLookup/284156

Unlike other transcriptions by Liszt, which I think even improve on Schubert's original, his transcription of this song nearly destroys the emotions and completely drowns them in ornament. So August Horn's version, which is nearly identical to Schubert's original is much better, but Gulda plays something that deviates from that too at some points.
So - does anyone know if what Gulda plays is something that has been written down or published, or is it just Gulda's own modification or transcription?
Most of those parts where Gulda deviates from the Horn version are better than the Horn version, so I would like to find the score if it exists. Otherwise I think I will just transcribe what Gulda did.

Any thoughs?

[j_menz]

As far as I can see, he plays the Horn pretty strictly albeit with a little flexibility as to tempo at some points. Where are you suggesting departs significantly?

[johsm]

Where are you suggesting departs significantly?

Well, not significantly, maybe, but I believe, there are quite a number of deviations, here just a few examples (maybe I am mistaken about some, but I think some of these are quite obvious):

• measure 11: he does not play the g# in the chords of the first triplet, and I think maybe not even the f
• measure 22: he plays an arpeggio where there isn't one in the score.
• measure 24: he plays the left-hand a-f# twice instead of a-c# for the second quaver
• measure 25: right hand does not play the tripled but something different
• measures 32ff: the right hand plays the lower thirds in addition to what is written for example, instead of e he plays c#-e
• 6 measures after "Geschwind": I think he plays the left hand differently, but not sure how exactly. After that he splits what is written for the left hand and plays the triplets with the right hand, and inverted at a higher position.
• The measure before and at "Wie anfangs, sehr langsam" is played differently and more like in the original song

As I said, I like most of these modifications, but I am curious if they might come from a different edition of the Horn version or if they were added by Gulda.

[j_menz]

I suspect they were added by Gulda, and it is doubtful they were ever published. So - you seem to have a pretty good idea of what he does - either do up your own, or just play it that way, keeping what you consider are improvements and ditching those that aren't.