Carlos Aguilera (Troubled Mind) / Synthesizers (9)
Paco Asensi / Keyboards (8, 11), Drums (8, 10, 11, 14)
Alessandro di Benedetti (Mad Crayon, Inner Prospekt) / Keyboards (6)
Mario Bocanegra (Qamar) / Drums (9, 12)
Pablo Canalís (Senogul) / Ocean and Water Sounds (4), Keyboards (4), Conch Shell (4), Waterphone (4), Native American Flute (4), Bass (11)
Jose Carballido / Vocals (6, 7, 10), Electric Guitar (6, 10), Keyboards (7, 10)
Jose Cifuentes (Ex-Moebius) / Flute (6, 8, 12), Sax (11)
Raul Diaz / Keyboards (3)
None Easter / Electric Guitar (5)
German Fafian (Axiom9, Axis Ensemble, German Fafian) / Cuatro (9), Guitars (9, 13), Keyboards (9), Electric Guitar (11), Modular Synthesis (9, 13, 14), Rhythm Guitar (14), Mixing (14)
Chus Gancedo (United Progressive Fraternity) / Drums (3, 6)
Oscar Garcia (Project Claudia) / Drums (14), Percussion (14)
Alberto Mateos (Project Claudia) / Bass (3, 8, 10, 14), Guitar (14), Keyboards (14), Mandolin (14)
Alicia Pacha / Vocals (12)
Rafael Pacha (San Barandan, La Banda del Lago, Last Knight, The Guildmaster, Samurai of Prog, Pacha & Porsti) / Guitars (2, 3, 4, 5, 6, 7, 9, 10, 12, 13), Percussions (2, 9), Keyboards (2, 5, 7, 8, 11), Psaltery (3, 12), Fretless Bass (4), Hulusi (5, 12), Recorders (8, 12), Flutes (9), Zither (8, 9), Violin (8), Melodica (8), Viola Da Gamba (9), Cuatro (9), Synthesizers (10, 13), Electric Guitar (8, 11), Tablas (12), Production.
Alfonso Romero (El Tubo Elastico) / Chapman Stick (2, 6, 12), Bass (9).
Joaquin Sainz (Malabriega, Joaquin Sainz) / Electric Guitar (5, 8)
Manuel Soto Noly (Martires del Compas, Malabriega, Graci Rodriguez Band, Manuel Soto Noly) / Acoustic Guitar (5), Keyboards (5), Drum Programming (5)
Coche Vil (Coche Vil Band, Costas) / Guitar Solos (14)
Claudia Zurdo (Project Claudia) / Vocals (3, 6, 14)
Alexandro Baldassarini, Maria Jose Vaquero Pichu / Narrator