Line-up
Jordan Rudess
Keyboard
Liquid Tension Experiment, ex-John Petrucci, Jordan Rudess, ex-Steven Wilson
Kevin James LaBrie
Vocals
Winter Rose, John Macaluso And Union Radio, Mullmuzzler, Explorer's Club, James LaBrie
John Ro Myung
Bass
ex-Gordian Knot, ex-Platypus, ex-Majesty (USA-2), The Jelly Jam, ex-Explorer's Club, ex-James LaBrie
John Petrucci
Guitar, Back Vocals
Liquid Tension Experiment, John Petrucci, ex-Jordan Rudess, ex-G3, Derek Sherinian, ex-Majesty (USA-2)
Mike Portnoy
Drums, Back Vocals, Percussions
Andy West With Rama, John Arch, SA Adams, Hail (USA-2), Portnoy Sheehan Macalpine Sherinian, Flying Colors, Bigelf, ex-Avenged Sevenfold, ex-Adrenaline Mob, The Winery Dogs, Liquid Tension Experiment, Transatlantic, John Petrucci, Neal Morse, Metal Allegiance, ex-Office Of Strategic Influence, Twisted Sister, ex-Majesty (USA-2), ex-Sons of Apollo
Past members
Mike Mangini
Drums
2011 - 2023
Tribe Of Judah, Steve Lynch, Tim Donahue's Madmen And Sinners, ex-Daniel Piquê, Ethan Brosh, ex-Extreme (USA), ex-Annihilator, ex-Steve Vai, Mullmuzzler, ex-Stygia (USA), ex-James LaBrie
Chris Collins
Vocals
1986 - 1987
Oblivion Knight
Kevin Moore
Keyboard
1986 - 1994
Chroma Key, ex-Alberto Rigoni, Office Of Strategic Influence, ex-Majesty (USA-2)
Charlie Dominici
Vocals
1986 - 1989
Dominici, ex-Majesty (USA-2)
Derek Sherinian
Back Vocals, Keyboard
1994 - 1999
Tony Smotherman, ex-Brad Gillis, Portnoy Sheehan Macalpine Sherinian, ex-All Too Human, Jughead, John Sykes, ex-Yngwie Malmsteen, ex-Platypus, Whom Gods Destroy, Black Country Communion, ex-Condition Red, ex-Nathan Frost, ex-Theodore Ziras, ex-Section A, Derek Sherinian, ex-Project Steiger, ex-Alice Cooper, ex-Black Label Society, Joe Satriani, ex-Kiss, Semantic Saturation, ex-Lightning Strikes, ex-OverKhaos, Joël Hoekstra's 13, ex-Joe Lynn Turner, Planet X, Agah Bahari, ex-Sons of Apollo
Stephan Erickson (aka Stephen Michael Stone)
Vocals
1990 - 1990
