Beethoven’s Symphony #9, toward the end of the final movement. “Seid umschlungen, Millionen!”/ “Alle Menschen werden Brüder!” Orchestra and chorus go full throttle—double fugue, full brass, the entire cosmic choir. Cataclysmic!
“Total Eclipse of the Hear” has multiple climaxes, of course.
But I immediately thought of Yes’ “Close to the Edge.” It took me about three times listening to it before I could stay awake through the somnolent section. But I somehow popped awake for the climax.
Have you heard the 15 minute version on “The Blow Up”? Messy but IMHO even better than the studio version. TBOalso has a glorious 15 minute version of Little Johnny Jewel.