Could someone help please?

[Ludvig_Van_Me]

I'm working my way through Beethoven's 'Pathetique' No.8 Op.13, when I got stuck.

I know how the bit is meant to sound (as I have it on CD and listen to it all the time) but I can't figure out what it is I'm meant to do, I have highlighted the moment:

https://img.photobucket.com/albums/v349/aaaaaaaaaaaaaaaaaaaaa/Pathetique.jpg


I'm working on the hammerklavier and also have got stuck:

https://img.photobucket.com/albums/v349/aaaaaaaaaaaaaaaaaaaaa/Hammer.jpg


I'm aware of how it's meant to sound but I want to know exactly what I'm supposed to be pressing


Thanks

[Daevren]

Its a small trill. Play the upper neighbour note once so you get three notes.

So Gb Ab Gb and F Gb F and E F E. (if I remember the key sig correctly, cant see it in your score).

[Ludvig_Van_Me]

Great, thanks Daevren