Kirk Hammett is an American guitarist. He was a member of Exodus before joining Metallica in 1983, and has since served as lead guitarist for the band. Hammett wrote the riff for Metallica's Enter Sandman. He also released the solo extended play Portals, and collaborated with Orbital on Satan. Among his popular songs are High Plains Drifter and The Jinn. Hammett has appeared in documentaries Metallica: Some Kind of Monster and Metallica Through the Never.