Paul D'Amour is probably best known as the original bass player of Tool. D'Amour left Tool in 1995 to pursue other musical projects. He founded a band called "Lusk" with wich recorded an album "Free Mars" (1997), subsequently he played in a cover band called "Replicants" and then, since 2005, D'Amour writes and performs under the name "Feersum Ennjin".