Nirvana

In 1991, Nirvana's Nevermind, Soundgarden's Badmotorfinger, the Smashing Pumpkins' Gish, and Screaming Trees' Uncle Anesthesia are released. You're free to make any possible considerations about the bands and their leaders, regarding their originality, or their debts to the past, but since then, the influence of the four on the rock to come is undeniable.