John Anthony Frusciante ( (listen); born March 5, 1970) is an American musician, best known as the guitarist for the Red Hot Chili Peppers across three stints since 1988. He has released 11 solo albums and 7 EPs, ranging in style from acoustic guitar to electronic music.

Frusciante joined the Chili Peppers at the age of 18 after the death of guitarist Hillel Slovak, and first appeared on their album Mother's Milk (1989). His second album with the band, Blood Sugar Sex Magik (1991), was their breakthrough success. Overwhelmed by the band's newfound popularity, he quit in 1992. He became a recluse and entered a period of heroin addiction, during which he released his first solo recordings: Niandra LaDes and Usually Just a T-Shirt (1994) and Smile from the Streets You Hold (1997). In 1998, he completed drug rehabilitation and rejoined the Chili Peppers, taking them to major success with their albums Californication (1999), By the Way (2002), and Stadium Arcadium (2006).

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