Joseph Satriani is an American rock guitarist, composer, songwriter, and guitar instructor. Early in his career, he worked as a guitar instructor, with many of his former students achieving fame, including Steve Vai, Larry LaLonde, Rick Hunolt, Kirk Hammett, Andy Timmons, Charlie Hunter, Kevin Cadogan, and Alex Skolnick. Satriani went on to have a successful solo music career, starting in the late 1980s. He is a 15-time Grammy Award nominee and has sold over 10 million albums, making him the bestselling instrumental rock guitarist of all time.In 1988, Satriani was recruited by Mick Jagger as lead guitarist for his first solo tour. Satriani briefly toured with Deep Purple, joining shortly after another departure of Ritchie Blackmore from the band in November 1993. He has worked with a range of guitarists during the G3 tour, which he founded in 1995. Satriani has been the guitarist for the supergroup Chickenfoot since joining the band in 2008.