"No other sane symphonic work strives to be grander in sound, scope, ambition or exaltation of the unknown."
Well, there is always Scriabin's "Mysterium," which was to last one week and bring about the end of the world. The prelude of this magnum opus has been reconstructed and recorded, too, lasting no longer than three hours:
But I doubt it's the same without the smells and on this side of the Himalayas where it was to be performed.
Right; the reviewer said "sane."
-PT