Rush's breakout album came in 1976. 2112 was the paragon of the power trio. Inspired by Anthem, a novella by Ayn Rand, 2112 explored a dystopian future where collectivism had run amok and individuality was so dangerous that there was no word for "I" or "me".

http://www.youtube.com/watch?v=LQEgZNqa8jE