Rick Rubin entered the picture for Blood Sugar Sex Magik , moving the band into a haunted mansion in the Hollywood Hills. The result was magic. They stripped back the noise to reveal the groove. "Give It Away" won them a Grammy, but the gentle, haunting "Under the Bridge" turned them into superstars.

The only studio album to feature the original classic lineup: Kiedis, Flea, Slovak, and Irons. This record is volcanic. Slovak’s playing is fluid, bluesy, and vicious. Tragically, Slovak died of a heroin overdose shortly after its release, followed by Irons leaving due to grief.

Frusciante, overwhelmed by fame, left the band during the 1992 tour, spiraling into a near-fatal heroin addiction.