Before Nirvana released their sophomore album Nevermind
in 1991, punk rock and indie music was considered niche-- something the masses would never touch. Punk certainly wasn’t getting any mainstream airplay, and the focus was on the hair metal bands of the era: Mötley Crüe, Poison, Warrant. With Nevermind
, Nirvana brought punk and indie rock into the popular music realm and made alternative music ubiquitous.