In the 1990s Gould was in the original line-up of the Mexican grindcore band Brujeria. He was also involved in several supergroups, such as Shandi's Addiction (with Maynard Keenan, Brad Wilk and Tom Morello) as well as Black Diamond Brigade (with Norwegian rock musicians Euroboy, Torgny Amdam, Tarjei Strøm and Sigurd Wongraven). Furthermore, he played with Wayne Kramer, and Fear Factory, and produced CMX's "Vainajala" album. His guest appearances include recordings for Romanian band Coma, and the production of "Living Targets" by German group Beatsteaks, Slovenia's Elvis Jackson, and the album "7" for the German rock band Harmful, in which he also toured with them the whole year 2007 as guitar player.