Line-up
John Petrucci
Gitara, Chórek
John Petrucci, ex-G3, ex-Jordan Rudess, Derek Sherinian, Liquid Tension Experiment, ex-Majesty (USA-2)
John Myung
Gitara Basowa, Chapman Sticks
ex-Gordian Knot, Platypus, The Jelly Jam, ex-Majesty (USA-2)
Kevin James LaBrie
Wokal
Explorer's Club, Mullmuzzler, Winter Rose
Mike Mangini
Perkusja
ex-Extreme (USA), Tribe Of Judah, Tim Donahue's Madmen And Sinners, Mullmuzzler, ex-James LaBrie, ex-Daniel Piquê, ex-Steve Vai, Ethan Brosh
Jordan Rudess
Klawisze
ex-John Petrucci, Jordan Rudess, Liquid Tension Experiment
Byli członkowie
Charlie Dominici
Wokal
1987 - 1989
Dominici, ex-Majesty (USA-2)
Michael Stephen "Mike" Portnoy
Perkusja, Chórek,
1985 - 2010
Kevin Moore
Klawisze
1986 - 1994
Chroma Key, Office Of Strategic Influence, ex-Majesty (USA-2), ex-Alberto Rigoni
Chris Collins
Wokal
1986 - 1987
Oblivion Knight
Derek Sherinian
Chórek, Klawisze
1994 - 1999
ex-All Too Human, Theodore Ziras, John Sykes, Planet X, ex-Section A, Tony Smotherman, ex-Brad Gillis, ex-Condition Red, Black Country Communion, Platypus, Jughead, Derek Sherinian, Agah Bahari, ex-Yngwie Malmsteen, ex-Nathan Frost, Portnoy Sheehan Macalpine Sherinian, Sons Of Apollo
