Kirk Lee Hammett (born November 18, 1962)[1] is an American musician who has been the lead guitarist of heavy metal band Metallica since 1983. Prior to joining Metallica, he co-formed the thrash metal band Exodus in 1979. In 2003, Hammett, along with bandmate James Hetfield, was ranked 23rd on Rolling Stone's list of Greatest Guitarists of All Time.[2] In 2009, Hammett was ranked number 15 in Joel McIver's book The 100 Greatest Metal Guitarists.[3][4][5]