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Frequently cited as one of the most important songs in the history of rock music, Nirvana's 1991 single "Smells Like Teen Spirit" almost single handedly popularized alternative rock and simultaneously brought the era of hair metal and pop metal to an end. Often cited as an anthem for Generation X, the chord progression for this song is strikingly similar to that of More Than a Feeling by Boston, a fact which Kurt Cobain openly acknowledged.