Gruntruck is an American rock band formed in 1989 in Seattle, Washington, by vocalist Ben McMillan and drummer Norman Scott, both previously from early Seattle sound pioneers Skin Yard. While in Skin Yard, Norman also briefly joined Soundgarden, and collaborated with Chris Cornell on a lesser-known band, the low frequency power trio Bass Truck. Lead guitarist Tommy Niemeyer from metal thrashers The Accüsed and bassist Tim Paul, previously of Portland hardcore punk band Final Warning, rounded out the initial, classic line-up. Their sound is described as grunge, and the band focuses more on the metal side of the genre.