Smells Like Teen Spirit was released by Nirvana in 1991 as the lead single from their second album, Nevermind, and it quickly became the defining song of the grunge movement and a breakthrough for alternative rock on mainstream radio and television. Its opening riff and chorus were widely played, parodied and sampled throughout the 1990s, and the track has remained a cultural touchstone through films, commercials and streaming playlists. Today it is still shared online as a shorthand for 90s attitude, rebellion and raw rock energy.