A brand new song echoed through a small club in Seattle on April 17, 1991. The band was called Nirvana. The audience had no idea they were hearing history. The song was Smells Like Teen Spirit, and within months it would change rock music forever. Before Nirvana, the biggest rock bands played polished, flashy music. Hair metal bands wore elaborate costumes and performed fancy guitar solos. Then Nirvana arrived with something different. Their music was raw and loud. Singer Kurt Cobain sang with real emotion, sometimes screaming into the microphone. Drummer Dave Grohl pounded the drums with ferocious energy. The band came from Seattle, Washington, where a growing music scene called grunge was taking shape. Grunge musicians wore flannel shirts and ripped jeans instead of glittery outfits. They sang about real feelings like frustration and loneliness. When Smells Like Teen Spirit was released in September 1991, radio stations played it nonstop. The momentum built fast. By January 1992, Nirvana's album Nevermind reached number one, beating Michael Jackson. Grunge replaced hair metal as the most popular rock sound. Cobain became a reluctant superstar who never wanted fame. He just wanted to make honest music. That first live performance was the spark that lit a musical revolution.