Members:
Arjen Anthony Lucassen (vocals, guitar, keyboards, bass)
Edward Reekers (vocals)
Lenny Wolf (vocals)
Robert Soeterboek (vocals)
Jan-Chris De Koeijer (vocals)
Ian Parry (vocals)
Barry Hay (vocals, flute)
Jan Van Feggelen (vocals)
Leon Goewie (vocals)
Ruud Houweling (vocals)
Lucie Hillen (vocals)
Mirjam Van Doorn (vocals)
Debby Schreuder (vocals)
Rene Merkelbach (keyboards)
Jolanda Verduijn (bass)
Cleem Determeijer (keyboards)
Ernst Van Ee (drums)
Peter Vink (bass)
Jan Bijlsma (bass)
Okkie Huysdens (vocals)
Roland Bakker (keyboards)
Jack Pisters (sitar)
Robby Valentine (keyboards)
Clive Nolan (keyboards)
Ton Scherpenzeel (keyboards)
Ed Warby (drums)
Taco Kooistra (cello)
Thijs van Leer (flute)
Fish (vocals)
Damian Wilson (vocals)
Sharon Den Adel (vocals)
Anneke van Giersbergen (vocals)
Edwin Balogh (vocals)
Erik Norlander (keyboards)
Rob Snijders (drums)
Johan Edlund (vocals)
Floor Jansen (vocals)
 Lana Lane (vocals)
Maurice Bom (vocals)
Jacqueline Govaert (vocals)
Neal Morse (vocals)
Michael Romeo (guitar)
Oscar Holleman (guitar)
Gary Wehrkamp (guitar, keyboards)
Keiko Kumagai (keyboards)
Russell Allen's Atomic Soul (vocals)
Ralf Scheepers (vocals)
Andi Deris (vocals)
Bruce Dickinson (vocals)
Fabio Lione (vocals)
Timo Kotipelto (vocals)
Devon Graves (vocals)
Devin Townsend (vocals)
Eric Clayton (vocals)
Mikael Ã…kerfeldt (vocals)
Magnus Ekwall (vocals)
Heather Findlay (vocals)
Irene Jansen (vocals)
James LaBrie (vocals)
Marcela Bovio (vocals)
Mike Baker (vocals)
Ken Hensley (keyboards)
Oliver Wakeman (keyboards)
Martin Orford (keyboards)
Joost van den Broek (keyboards)
John McManus (flute)
Jeroen Goossens (flute)
Robert Baba (violin)
Marieke van der Heyden (cello)

Associated Acts:
Ambeon
Arjen Anthony Lucassen's Star One
Stream of Passion
Vengeance
Bodine
Lana Lane and Erik Norlander
Symphony X
Shadow Gallery
Kayak
Gorefest
Finch
After Forever
Highway Chile
The Boxx
Mostly Autumn
Elfonia, The Consortium Project

Genres:
Progressive Metal
Progressive Rock
Rock Opera
Medieval Style
Death Metal
Power Metal
Symphonic Rock

Formed: In 1994 in Rijsbergen, Netherlands

Debut Album: The Final Experiment (1995)