The Polyphonic Spree are a psychedelic pop group which formed in 2000 in Dallas, Texas, United States. The band's core members are Tim DeLaughter (lead vocals, guitar), Mark Pirro (bass) and Bryan Wakeland (drums), all former members of the alternative rock band Tripping Daisy. The band also contains 5 backing vocalists and 12 musicians. The band's lineup has generally been stable since their formation.
Ghost Outfit refers to two bands. One is an experimental rock group from around Manchester, England. They formed in their first incarnation in 2006 and sporadically played a few gigs and recorded under different names, until the lineup solidified in 2009. They recorded the Forest Shout EP in September 2009 as a four-piece, and played a few gigs until their guitarist quit. In April 2010 their bassist left the group, and they are now working as a two-piece.
There are different artists using the name 'Sleepwalker': 1) Atmospheric Black Metal/Post-Rock. Very little is known about this band, but it is the solo project of the drummer of Fell Voices and has two CD-R demos, each with three untitled tracks. Sleepwalker is working on new material as of May 15th, 2011, and the first demo was remastered and re-released on LP by Vedavu in 2012 (this time with song titles: "Born of Dream", "Sleepwalker", and "Ecstatic Unknown").