I find that the slower tempos that Gould often employs allow him to bring out more of the texture in the music. Besides, back in Beethoven's time tempi were often much slower than what we are used to today
@Dienysis yeah I think a lot of people make that mistake (myself included) that when I know how to play something well I speed it up, rather than let it take it's time. Sometimes very simple pieces sound a lot better slow even though they are easier to play fast (and vice versa!).
@ishikawa1202 It doesn't matter if someone can or cannot play this fast. I'd prefer to play this song slower. The hesitation, the crawling pace lends an air of desperation to the piece that is mitigated in faster renditions.
@ishikawa1202 I dont think this tune is good when played fast - it almost completely loses its feeling. the steady rhythm adds to its beauty, imo. probably one of the most beautiful piano melodies ever written - Beethoven was a genius simply for writing this one piece alone.