Is that where he got it?
Just to demonstrate the holes in my knowledge of the classical repertoire …
I didn’t realize Alfred Schnittke pretty much refashioned Ludwig Van Beethoven’s Grosse Fuge for his String Quartet No. 3.
As such, I can’t listen to the Grosse Fuge without my ears filling in all the clustered notes Schnittke "added". Even as a melody in its original form, it’s pretty dissonant.