hi, i jus  tried out the beethoven sonata 'moonlight' mov.1 and i was wondering should i add the pedal so that the sound will be nicer? pls help...

senza sordino means "without dampers"

If you press the right pedal, the dampers go away from the strings.

So yes: this piece should explicitly be played with pedal.

But do not hold the pedal throughout the piece. That's surely not what Beethoven meant.
Andras Schiff sometimes has sort of strange ideas 

I personally think Schiff's rendition sounds horrible. He seems to think of it as a sort of funeral march.

But I can't see that this is what Beethoven intended.

I think one should take notice of the whole of Beethoven's instruction: "This whole piece must be played very delicately and without dampers [or with pedal]".

It is surely almost impossible to achieve delicacy on a modern piano with the pedal permanently depressed. However, there are stretches where one might do this. Charles Rosen suggests you can keep the pedal down through bars 32-37 provided you resist the temptation to do a crescendo here.
 

In Beethoven's time, the pedal would be very different from what it is now. I would think that in his time, it would have been perfectly ok to keep the pedal down, but with the modern pedal, I would definitely lift it, otherwise the piece becomes muddy.

Schiff makes an interesting and somewhat compelling argument for the funeral march aspect when he cites the quote from Don Giovanni. And, as he says, we do have the manuscript to work from. That said, I don't think I'd have the guts to play this  even 1/3 pedaled for a general audience--without a short lecture beforehand explaining your intent, it could sound to them like you couldn't play worth sh....t!

Please pedal. Although your performance without pedal would be unusual, it would be rather dry, don't you think? Good luck.

I've played the movement on a piano from around the time it was written, and sustain pedal held continuously is possible and not at all silly. On the other hand, when a composer indicates something along the lines of 'Sempre con ped.' he doesn't _necessarily_ mean 'never lift it at all ever'. And there are such things as half-pedalling, flutter-pedalling etc.

There is some evidence from Beethoven's diaries that the funereal interpretation of the movement is valid. Apparently he was seriously considering suicide around the time he wrote it.

I've played the movement on a piano from around the time it was written, and sustain pedal held continuously is possible and not at all silly.

I read back through this thread and saw no mention that anyone said it was "silly". That said, I agree that considering the modern grand piano, it's entirely possibly that we need to re-examine this movement and seriously consider creative use of half-pedal technique in the spirit of being more in tune with Beethoven's intent.

We've established the fact that B's piano had this characteristic - the discussion now is just how to effectively half-pedal on the modern piano to achieve a satisfactory result--or is it even possible without creating a totally different effect than intended. Or, as in many arguments regarding baroque interpretation, would the composer have written differently if in possession of our modern grand.

I find these discussions interesting and enlightening, and it's fun to attempt this at the piano by myself; but, while an Andres Schiff might get away with his somewhat speedier, sustained interpretation in public because of his reputation, I'm not sure I could. How many of you would risk playing it this way for a jury? Like I said earlier, unless handled carefully, it could sound to many like sh....t.