Tweaker is an American alternative rock collaboration project band founded by Chris Vrenna in the late 1990s. Tweaker's musical style incorporates synthpop, progressive rock, modern jazz and electronica genres, and is characterized by a generally melancholy and somber sound with matching artwork.
Tweaker wrote and performed the theme music to Doom 3, of which the theme song was released via the band's website. The rest of the soundtrack is accessible from the game's files. Tweaker also composed the theme music for the animated television show Xiaolin Showdown. Unlike the band's usual synthpop, shoegaze, modern jazz, dark ambient and industrial sound, the Doom 3 theme was mainly heavy metal.
In 2004, Tweaker opened for Skinny Puppy on select dates with a full live band, consisting of Chris Vrenna (drums, percussion and keyboard), Clint Walsh (guitar and keyboard), William Faith (bass guitar) and Nick Young (vocals). They performed everything live (i.e., no pre-recorded tape), although they did have to alter some of their songs to fit the live format — the most extreme case being a completely revamped rock version of "Microsize Boy". The final performance on the tour was at QuakeCon 2005 in Dallas, TX.
