Sopranos: Tricia Bentley, Hilary Brennan, Rachael Clegg, Bridget Corderoy, Carolynne Cox, Sally Donegani, Alison Eden, Karen Filsell, Claire Hills, Rachel King, Felice Kuin, Wendy Norman, Kathy Willis, Olivia Maffett.
Altos: Debbie Bright, Kathryn Cook, Denise Fabb, Victoria Kendall, Katy Meiklejohn, Yvette Miller, Fiona Robinson, Hatty Webb, Lorna Youngs.
Basses: Tim Bull, Tim Colbourn, Peter da Costa, Mark Fenton, Michael King.
Director: Peter Broadbent.
Solo Soprano: Nathalie Barbary.
Whispered Female Voice: Alison Eden.
All other vocals, instruments, sequencing, programming and sound-editing by Alexandre Hasnaoui, Sébastien Roland and Renaud Tschirner.
Words and music written by Hasnaoui / Tschirner.
"The Umbersun" was recorded at Wolf Studios, London. Engineered by Dominique Brethes and Damian Taylor. Mixed by Dominique Brethes and Sébastien Roland.
Produced by Elend and Dominique Brethes.
Pre-produced by Elend at The Fall Studios. Mastered by Dominique Brethes.
Re-released on April 21st 2008 by Orphika. This edition, which was carefully remastered by ELEND, features the original artwork (refused by Music for Nations at the time of the first release) and a bonus track recorded during the same sessions and initially intended for a limited edition which was never released. The album is available as digipak CD and double vinyl LP.
There are also has two digipak reissues - one, an unofficial yet legal rerelease through Metal Mind Productions in 2007, and there is another one released on the 21st of April 2008 both as the digipak and a double vinyl LP (both of these formats have a bonus track featured as the first track "Overture" (2:38), which was not present on the original or Metal Mind Productions reissue).