Need help - Schubert Impromptu No.2 Op. 142...

[nonfox]

Hi...
I'm learning the Schubert Impromptu No. 2 Op. 142, but i need a little help....
I'm not sure how to play the trill in measure 76. I have no problems in performing a trill with my left hand, but I'm not sure between what two notes the trill ought to be performed! The one note has to be the f#, but what note is the second?

[kelly_kelly]

G sharp I believe, as that's how the acciaciatura (not positive that this is the correct term; I mean the grace noet before the trill) is marked.

[bartolomeo_]

The score isn't clear on this point.  Neither of my scores (one a reputable "Urtext" edition) has a grace note before the trill so I would imagine that it is an editorial addition on those scores where it is present.

Ordinarily the trill would be between the f# and the next note on the scale which would be a G natural.  I play a G# because it sounds better.