Seriously, listening to this makes me tear up and laugh at the same time--it just happens to me.
More on Beethoven's "revotionary music."
From The Beethoven Project:
“The metronome markings [for the Missa Solemnis] will be sent to you very soon. Do wait for them. In our century, such markings are certainly necessary; moreover I have received letters from Berlin informing me that the first performance of the [ninth] Symphony met with enthusiastic applause, which I ascribe largely to the metronome markings…” (Letter to Schott, Dedember 18, 1826)
(from Cliff Eisen, "Notation and Interpretation", A Performer's Guide to Music of the Classical Period, Anthony Burton Ed., ABRSM Publishing)