One of the best live music experiences of my life was seeing Apocalyptica in a tiny little club in Oxford. There were maybe a hundred of us there, and there was an absolutely banging moshpit happening up at the front. We were well into the encore, the last song had just finished, and alll of us in the pit were standing there in that weird breathless moment between songs when you briefly return to reality. The band announced that this would be the last song of the night.
And then the first few notes of this song played. There was this moment where all of us looked at each other, and then we grinned like fucking lunatics, as every one of us had collectively had that same thought process of "Are we about to mosh to In The Hall of The Mountain King? Yes. Yes, we bloody well are."
And we did, and it was glorious.