Jean-Lin : lyrics, vocals (Tu me Manques, Le Voile d'Une Pierre)
Inga : lyrics, vocals (Anticipating the Light, Warriors of Light)
Tóth Lüszi : vocals (Ragyogó Fény, Tavaszi szél vizet áraszt)
Mathieu Schmitt : guitar (Le Voile d'Une Pierre, Luo Tian Ji, Vouloir Changer, Poupée de Chiffon)
Betty Pintér : vocals (Future Generations, 2012 ), lyrics (Ragyogó Fény)
Duo Santorini : vocals, guitar, percussion, bouzouki (Dari, Dari)
Felix Lancelot (Slowemotion) : films (Shaman, Football, Golf, Sloewmotion)
Noémie Methlin : lyrics, vocals (Mermaids, Hymne à la Vie, Poupée de Chiffon, One Second)
Chen Sixian : lyrics, vocals (Luo Tian Ji)
Kathryn Toyama : piano (Silent Night)
Michael Müller : Shakuhachi (Mononoke Hime)
Catherine Bauder : lyrics, vocals, guitar (Anywhere Out Of The World, Beyond Your Dreams, Heaven Lost, So Many Things, One Second, Ever, Walking Down The Hill, In Wanderland )
Géraldine Olivo : tin whistle, lyrics, vocals, music (Bataille, Sensuality, Heaven Lost, So Many Things, One Second, Ever, Walking Down the Hill, To Hell, In Wanderland)
Marie H. : guitar (Look at the Stars)
Young rock choir of Sélestat's secondary school Mentel (9 girls) : vocals (Look at the Stars)
Blanka Cechova : violin (One Seoncd, Walking Down The Hill)
Julia Spinner : lyrics, vocals (Envoûtement, Paradisiaque)
Medelise : lyrics (Vouloir Changer)
Paul Weibel : vocals (Lost Child - L'Enfant Perdu)
Tian Tian : lyrics, vocals (Giants, Wan Chun De Xiao Chi)
Monique Celdran : lyrics (Si Près du Sol)
Alain Metzger : lyrics, vocals(Le Chemin que les Anges Tracent)
Saara Aalto : vocals (Inga's Liberty)
Mathieu Heckenauer : guitar (Holy People)
Sébastien Meyer : flute (L'Atlantide)
