Can we talk about how insane Geddy's scream at the end of Cygnus X-1 Book One is??

I used to think the scream at the intro to 2112 from All the World's a Stage was his craziest vocal, but this blows it out of the water. The last two minutes of Cygnus X-1 leave me with full-body chills. Geddy in his prime was such an underrated rock vocalist