«An unrecognized problem concerning the pedal in Beethoven's music is not how to use it, but where to avoid using it. It must certainly be true, as Czerny maintained, that when playing, Beethoven used the pedal much more than he indicated in his scores, but this does not mean he used it as much as Chopin or Schumann, or as much as today's pianists. (…).
(…) for Beethoven as for Haydn, the pedal was still a special effect useful primarily to produce contrast. Perhaps the only exception in his entire oeuvre is the first movement of the “Moonlight” Sonata, a unique essay in sonic colorism: here Beethoven wanted the entire piece with the pedal, i.e., performed delicately in pianissimo without ever changing the pedal, thus without ever lowering the dampers on the strings. Even on his piano, this produced a tenuously indistinct sonority and a magical sound atmosphere that can actually be reproduced on a modern piano provided that the pedal is changed with extreme subtlety halfway through in a delayed manner.(…)
(…) Beethoven writes in Italian at the top of the score “Si deve suonare tutto questo pezzo delicatissimamente e senza sordino”. (…)
It is one of the first works that takes into account the fact that the sympathetic vibration of the piano strings, when the resonance pedal is depressed and the dampers are raised, is not instantaneous but increases gradually and requires several fractions of a second to become clearly audible and produce its full effect. The extraordinary atmosphere of this movement is based on this subtle but traversable delay of the free string vibrations. By keeping the resonance pedal of a piano from Beethoven's era depressed, the attack of each new harmony does not take over immediately, but with a minimal hesitation as the free strings react to the new bass.
On today's instruments we cannot hold the pedal incessantly, as required by the composer; however, if the performance is sufficiently delicate, it is possible to reproduce the vaguely blurred sonority of old instruments by changing the pedal slightly late or using half-pedaling. Since every piano has different characteristics, the pedaling should be adapted to the various instruments being played. With a bit of sensitivity, the matter is less complicated than one might think. If in measures 32-37 one manages to maintain the pianissimo, resisting the temptation to grow as the harmonies follow one another, I have discovered that there is no need to change the pedal. Playing the accompaniment with the delicacy required by Beethoven, it is not necessary to change the pedal, for example, even in measures 53 and 54 between C#+ and F#- , although some adjustment should be made at measure 55. The crescendo at measure 47, though beginning in pianissimo, should be intense enough to allow the piano of measure 48 to be a subito piano.
The problem of the dotted rhythm of the soprano melody against the alto triplets, obviously, should not be resolved by making the soprano coincide with the triplets: the problem consists precisely in differentiating the sixteenth note from the triplet eighths without playing it so tightly as to make it banal. The real difficulty is maintaining the constant rhythm of the alto unchanged, without the slightest hesitation (one can accelerate or decelerate for expressive purposes), but the motion of the triplets must never be interrupted, even for a moment, to give space to sentimental nuances in the melodic line. The triplet must be, as Berlioz said, obstinée, unstoppable. Its inflexible winding should produce a hypnotic effect; the difficulty lies in making them unalterable yet at the same time discrete.(…)»
Excerpt from “Beethoven's Piano Sonatas” by Charles Rosen. Casa Editrice Astrolabio)
I hope I have written something pleasing. "