Power Metal was the name given to a demo recorded sometime in April 1982. Although the demo was never officially released, it was given the bootleg name &Power Metal& after the tagline McGovney had printed on Metallica's first business cards. The tape contained four original songs, including two new songs, &The Mechanix&, written by Dave Mustaine, and &Motorbreath&, written by James Hetfield. It was also, like all previous demos, recorded in McGovney's garage.
Personnel
■ James Hetfield - lead vocals, rhythm guitar
■ Lars Ulrich - drums
■ Dave Mustaine - lead guitar, backing vocals
■ Ron McGovney - bass guitar
■ &The Mechanix& was the original version of &The Four Horsemen& which later appeared on Metallica's 1983 debut album Kill 'Em All. Mustaine also included a reworked version of the song, simply titled &Mechanix&, on the first Megadeth album, Killing Is My Business... and Business Is Good!.