I don't personally like the tuning on that - it feels a little too rough. However, many classical and even romantic-period composers had pianos tuned in Werckm

I don't personally like the tuning on that - it feels a little too rough. However, many classical and even romantic-period composers had pianos tuned in Werckmeister, Kirnberger, or Vallotti temperaments, which had toned-down versions of similar dissonances you hear here (similar to the second rendition of the Mozart in that video).