I know the very tune you mean.

Even more egregious, in that opera,
is the riot in the streets.
Staging that scene, what an assignment.

In the score, you see Wagner
imitating polyphonic counterpoint like the Well Tempered Clavier
and watching all the machinery with the turning gears --

but to actually have people beating each other up!

I agree about Beethoven. Give him a break --
but I feel sorry for the chorus.
As one music professor of mine said,
after the chorus gets through the Ninth Symphony,
they get to go home and eat ice cream for a week,
like having your tonsils out!