Yes, the sustain pedal is pressed in the beginning of the piece and just in the end I had to release it. So it is almost 10 minutes of swimming in the music :)))
There was a G that was not perfect, in mechanic either, so it was always somehow louder then the other notes...and an F that was softer, those are small small details. In pitch, not that bad either, even that imperfections gave a feeling of a more natural sound.
Oh yes, the number 3 is taking place in religions too, a lot of, lot of symbolism in the number three, you are right. :)
Cheeers!