Where did alternative music originate from?

Where did alternative music originate from?

Emerged from the independent music underground of the 1980s and became widely popular by the 1990s. Often contains transgressive lyrics and generally a nonchalant, defiant attitude. Punk Rock in the late 1970s laid the groundwork for alternative music. With the breakthrough of Nirvana and the popularity of the grunge and Britpop movements of the 1990s, alternative rock entered the musical mainstream and many alternative bands became commercially successful.