Nevermind (Nirvana, 1991)

Released on 24 September 1991, Nirvana's Nevermind sold 30 million copies worldwide and single-handedly ended the dominance of glam metal on American radio and MTV, ushering in the grunge era. The opening single "Smells Like Teen Spirit" became the defining rock anthem of the 1990s. Nevermind replaced Michael Jackson's Dangerous at #1 on the Billboard 200 in January 1992 and was certified 10x platinum in the US, proving alternative rock could achieve mainstream commercial success.