Az itt felsorolt zenészek részt vettek valamelyik Ayreon album elkészítésén. Rajtuk kívül az együttes alapítója, Arjen Lucassen énekelt minden albumon és sokféle hangszeren játszott is.
Ének
ÉnekesAlbum, amin szerepeltSzerepeAndi Deris (Helloween)Universal Migrator Part 2: Flight of the MigratorAnneke van Giersbergen (The Gathering)Into the Electric CastleEgyiptomiAyreonauts Only -Astrid van der Veen (theEndorphins)Ayreonauts Only -Fate of a Dreamer (Ambeon) –Axel Joseph Langemeijer (ex-Bodine)III · Three Times Running (Bodine) –Barry Hay (Golden Earring)The Final Experiment –Bruce Dickinson (Iron Maiden)Universal Migrator Part 2: Flight of the Migrator –Damian Wilson (ex-Rick Wakeman, Threshold (UK), Landmarq)Into the Electric CastleLovagUniversal Migrator Part 1: The Dream Sequencer –Ayreonauts Only -Dan Swanö (Nightingale, Edge of Sanity, ex-Bloodbath (Swe))Space Metal (Star One) –Dave Brock (Hawkwind)Space Metal (Star One) –Debby SchreuderThe Final Experiment –Devin Townsend (Strapping Young Lad, The Devin Townsend Band)The Human EquationDühDevon Graves (Dead Soul Tribe, Psychotic Waltz)The Human EquationGyötrelemEdward Reekers (ex-Kayak)Into the Electric CastleJövőbeliUniversal Migrator Part 1: The Dream Sequencer –The Final Experiment -Actual Fantasy -Ayreonauts Only -Edwin Balogh (ex-Omega)Into the Electric CastleRómaiEric Clayton (Saviour Machine)The Human EquationOkErik NorlanderUniversal Migrator Part 1: The Dream Sequencer –Universal Migrator Part 2: Flight of the Migrator –Fabio Lione (Rhapsody of Fire)Universal Migrator Part 2: Flight of the Migrator –Fish (Fish, ex-Marillion)Into the Electric CastleHegylakóFloor Jansen (ReVamp, After Forever, Northward, Nigthwish)Universal Migrator Part 1: The Dream Sequencer –Gary Hughes (Ten)Ayreonauts Only –George Oosthoek (Orphanage)Into the Electric CastleHalálHansi Kürsch (Blind Guardian)01011001, The Source, Universe –Heather Findlay (Mostly Autumn)The Human EquationSzerelemIan Parry (Elegy)Universal Migrator Part 2: Flight of the Migrator –The Final Experiment -Ayreonauts Only -Irene Jansen (ex-Karma)The Human EquationSzenvedélyJacqueline Govaert (Krezip)Universal Migrator Part 1: The Dream Sequencer –James LaBrie (Dream Theater)The Human EquationÉnJan-Chris de Koeijer (Gorefest)The Final Experiment –Jay van Feggelen (ex-Bodine)Into the Electric CastleBarbárThe Final Experiment -Johan Edlund (Tiamat, Lucyfire)Universal Migrator Part 1: The Dream Sequencer –Lana LaneUniversal Migrator Part 1: The Dream Sequencer –Universal Migrator Part 2: Flight of the Migrator –Lenny Wolf (Kingdom Come)The Final Experiment –Leon Goewie (Vengeance (Neth))The Final Experiment –Ayreonauts Only -Lucie HillenThe Final Experiment –Magnus Ekwall (The Quill)The Human EquationBüszkeségMarcela Bovio (ex-Hydra, Elfonía, Stream of Passion)The Human EquationFeleségMark McCrite (Rocket Scientists)Universal Migrator Part 1: The Dream Sequencer -Mikael Akerfeldt (Opeth, ex-Bloodbath (Swe))The Human EquationFélelemMike Baker (Shadow Gallery)The Human EquationApaMirjam van DoornThe Final Experiment –Mouse (Tuesday Child)Universal Migrator Part 1: The Dream Sequencer –Ayreonauts Only -Neal Morse (ex-Spock's Beard)Universal Migrator Part 1: The Dream SequencerAz első emberOkkie HuysdensActual Fantasy –Peter Daltrey (ex-Kaleidoscope)Into the Electric CastleForever of the StarsRalf Scheepers (Primal Fear)Universal Migrator Part 2: Flight of the Migrator –Robert Soeterboek (Wicked Sensation)Universal Migrator Part 2: Flight of the Migrator –The Final Experiment -Actual Fantasy -Ayreonauts Only -Robert Westerholt (Within Temptation)Into the Electric CastleHalálRussell Allen (Symphony X)Universal Migrator Part 2: Flight of the Migrator –Ruud Houweling (Cloudmachine)The Final Experiment –Sharon den Adel (Within Temptation)Into the Electric CastleIndiánSimone Simons (Epica)01011001 –Timo Kotipelto (Stratovarius)Universal Migrator Part 2: Flight of the Migrator –
Gitár
Gary Wehrkamp (Shadow Gallery) – Universal Migrator Part 2: Flight of the Migrator Jan Somers (Vengeance (Neth)) Michael Romeo (Symphony X) – Universal Migrator Part 2: Flight of the Migrator Oscar Holleman (ex-Vengeance (Neth)) – Universal Migrator Part 2: Flight of the Migrator Peer Verschuren (ex-Vengeance (Neth)) Rheno Xeros (ex-Bodine) Ruud Houweling (Cloudmachine)
Basszusgitár
Armand van der Hoff (ex-Bodine) Jan Bijlsma (ex-Vengeance (Neth)) – The Final Experiment Jolanda Verduijn – The Final Experiment Peter Vink (ex-Finch) – The Final Experiment és Actual Fantasy (újra-kiadáson) Rheno Xeros (ex-Bodine) Walter Latupeirissa (Snowy White)
Fuvola
Barry Hay (Golden Earring) Ewa Albering (ex-Quidam) Jeroen Goossens (ex-Pater Moeskroen) – The Human Equation John McManus (Celtus) – The Human Equation Thijs van Leer (Focus) – Into the Electric Castle
Didgeridoo
Jeroen Goossens – The Human Equation
Billentyű / Zongora / Hammond orgona
Cleem Determeijer (ex-Finch) – The Final Experiment, Ayreonauts Only és Actual Fantasy Clive Nolan (Arena) – Into the Electric Castle, Universal Migrator Part 1: The Dream Sequencer és Universal Migrator Part 2: Flight of the Migrator Erik Norlander – Universal Migrator Part 2: Flight of the Migrator Gary Wehrkamp (Shadow Gallery) – Universal Migrator Part 2: Flight of the Migrator Jens Johansson (Stratovarius) Joost van den Broek (After Forever) – The Human Equation Keiko Kumagai (Ars Nova) – Universal Migrator Part 2: Flight of the Migrator Ken Hensley (ex-Uriah Heep) – The Human Equation Martin Orford (IQ, Jadis) – The Human Equation Oliver Wakeman – The Human Equation René Merkelbach – The Final Experiment, Into the Electric Castle, Ayreonauts Only, Actual Fantasy és Universal Migrator Part 2: Flight of the Migrator Robby Valentine (Valentine) – Into the Electric Castle Roland Bakker (ex-Vengeance (Neth)) – Into the Electric Castle Ton Scherpenzeel (Kayak) – Into the Electric Castle
Szitár
Jack Pisters – Into the Electric Castle
Cselló
Dewi Kerstens Marieke van der Heyden – The Human Equation Taco Kooistra – Into the Electric Castle
Dob
Ed Warby (Gorefest) – Into the Electric Castle, Actual Fantasy(újra-kiadáson), Universal Migrator Part 2: Flight of the Migrator és The Human Equation Ernst van Ee (Trenody) – The Final Experiment és Ayreonauts Only Gerard Haitsma (ex-Bodine) John Snels (ex-Vengeance (Neth)) Matt Oligschlager (ex-Vengeance (Neth)) Rob Snijders (ex-Celestial Season) – Universal Migrator Part 1: The Dream Sequencer Stephen van Haestregt – Ayreonauts Only Alexander Manyakin (ex-Aria)
Hegedű
Ernö Olah (Metropole Orchestra) – Into the Electric Castle Pat McManus (Celtus) Robert Baba – The Human Equation
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