Rob Halford
In 1994 he produced Red Square Black's "Square EP", his first collaboration with John 5, which would be followed by David Lee Roth's album "DLR Band", 2wo (industrial metal project of John 5 and Rob Halford), the mixing of the UK bonus CD of Marilyn Manson's "The Last Tour on Earth" and "Loser". In the late 1990s besides Rob Halford he started producing other big hard rock names like Black Sabbath and Tony Iommi, and Quiet Riot.