I would like to ask a question about the speed of playing a piece on the piano.
For example, I have listened to a special “Polonaise” in G-minor
from the Maria Magdalena Notebook by Johann Sebastian Bach many years ago,
and it was played on a violin very slowly, in fact,
it was very touching and the violin was almost “weeping”.
I then re-discovered the same Polonaise a few years ago on a CD called “Visions of Bach”.
And here again it is played on the violin (Celtic Fiddle) very slowly, thoughtfully and very sensitively.
I also heard it how to play the piano
and it was played rather fast.
Does anyone know how to play these pieces, are there any rules
or is it everyone’s own choice how to express themselves?
I have also noticed Sonatas of D. Scarlatti often being played very quickly
and only rarely does anyone play Scarlatti slowly enough to appreciate every single tone
and "let it linger a little".
Are there any rules how to play or is it everyone's own choice?
Piano tone is solely determined by the speed that the hammer travels to the strings. As said by the others, it will depend on the piece you are playing and on what tempo you want it to be played.