As a former professional musician graduate from high school in a previous life
, i agree with all already mentioned.
We could add another ones, for example, Debussy...etc
But what about this phenomenon? https://m.youtube.com/watch?v=X5FUxqnoHDU
Only few musicians have capability to play the famous Black Page.
Polyrhythm, dodecaphonism, hexatonic patterns, quarter-tone intervals.....😨
Perhaps the greatest composer of the 20th century.