Dream Theater discography

Dream Theater discography
Dream Theater in Paris, 2005 From left to right: Mike Portnoy, John Petrucci, James LaBrie, John Myung, and Jordan Rudess
Studio albums	13
Live albums	8
Compilation albums	1
Video albums	8
Music videos	11
EPs	1
Singles	27

The discography of Dream Theater, an American progressive metal/rock band, consists of thirteen studio albums, one extended play, eight live albums, one compilation album, eight video albums, twenty-seven singles, and eleven music videos. The band was formed under the name Majesty by guitarist John Petrucci, bassist John Myung, and drummer Mike Portnoy while the three of them were attending Berklee College of Music in September 1985. The trio added keyboard player Kevin Moore and vocalist Chris Collins in order to complete their lineup. After the band released a demo entitled Majesty Demos, Collins was replaced by Charlie Dominici in November 1987.

The group signed with Mechanic Records, and released its debut album When Dream and Day Unite in 1989. Before the album's release the group agreed to change their name to "Dream Theater", inspired by a now-demolished California movie theater. After firing Dominici, Dream Theater hired Canadian vocalist James LaBrie in 1991. LaBrie's debut album was Images and Words, which was the band's first gold-certified album by the Recording Industry Association of America (RIAA), having sold more than 500,000 copies. The second was Scenes from a Memory. Moore left the group after the recording of 1994's Awake and was replaced by Derek Sherinian for the album's tour—he was later hired as a full member, appearing on the EP A Change of Seasons and the full album Falling Into Infinity. The double live album Once in a Livetime was released in 1998.