Metallica on their Ride The Lightning tour played the Concert Hall in Toronto ('85? '86?), opening for WASP and some other, forgettable band. Metallica was still pretty much unknown then and the stage show was not much more than a hanging lightbulb. But everyone was there to see them.
The place was small, smoky and with about 1200 headbangers in the audience, they tore the place down for 45 minutes. So much so, that WASP (who were terrible, I don't know why anyone stayed) were all but booed of the stage.
Now THAT was a rock concert.
(After that, there really was no #2)