Moonlight Sonata: Need help

Hello. I'm having a bit of a doozy trying to decipher the 35th measure of the first movement of this piece. The measure starts with what appears to be an F-sharp, but here's the problem: The key signature already has F-sharped. So, does that mean that I play a G natural, or do I still play F-sharp? And what about the other places in this movement where a key that's already sharped is sharped or flatted again?

Here's the music if you don't know what I mean:

http://www.box.net/shared/tbsnmxl96p

The X is a double sharp. The double sharp moves the F two semi-tones up, EXLUDING the key signature. So you play a G. With any other note that has a regular sharp next to it, just play it one semi-tone up INCLUDING the key signature. Any note that is a natural, just play the white key of they note it tells you to play.

So, if I get you correctly, if the note that has an accidental and has one in the key signature, treat it as if the note was a natural; otherwise, apply the accidental as normal?

greatman05 wrote:So, if I get you correctly, if the note that has an accidental and has one in the key signature, treat it as if the note was a natural; otherwise, apply the accidental as normal?

You are correct! All accidentals are to be considered that there never where a key-signature!

Ill let you in on a secret" in sheet-writing! Actually ALL accidentals last for 1 single bar, and I just checked the piece now, and in bar 34 - the F is double sharped by the x which is a double sharp(=g in this case).. But even though these accidentals only last for 1bar, its common practice to make it clear, by "accidentaling the note affected" in the following bar, to help the sheet-reader! That is why the F in bar 35 is #.. even though it is just the same if the # where'nt there!!

OK! Thanks for clearing that up!