Brian was minding his own business and enjoying the show, until Dave Grohl beckoned for someone in the crowd to lend vocal lines to the cover of Rush's "Tom Sawyer" they were about to perform.

Brian, no doubt filled with the hubris that a live rock 'n roll show tends to inspire (and probably some liquid courage too), suddenly found himself brave enough to heed Grohl's call. He knows the words. He can hit those notes. He raised his hand.

Grohl, clearly astounded by Brian from Edmonton's vocal mastery of Geddy Lee's sky high notes, couldn't wait to share his enthusiasm. "F-- Briaaaaan!" he screamed. "Oh my God! Dude, that was F-- amazing!"