Machine Head is an American heavy metal band from Oakland, California, formed in 1992. Founded by singer and guitarist Robb Flynn and bassist Adam Duce, and has only had 4 personnel changes since its inception 17 years ago. The current lineup of the band comprises Flynn (vocals, guitar), Duce (bass), Phil Demmel (guitar), and Dave McClain (drums). Machine Head is one of the pioneering bands in the New Wave of American Heavy Metal.