1 August, 2009: added detailed comparison of La Reine Verte courtesy of Gregor Meyer.
10 January, 2007: refined entry for Le Petit Train. added image. Repaired link to my trade list.
16 March, 2004: added entry for Koumra - Conte Africain single.
1 November, 2003: added an entry for Austrian Psyche Rock / Jericho Jerk single.
1 October, 2002: added some entries for LPs from the reissue series with Henry's photo in upper left hand corner. Added link to copy of Spatiodynamisme for sale.
5 May, 2002: added images for collaboration LP with poems from Claude Pascal. added image for Psyche Rock single.
24 February, 2002: added entry for Psyche Rock / Teen Tonic single.
16 February, 2002: added images for German Psyche Rock / Jericho Jerk single.
2 February, 2002: added entry for Psyche Rock / Jericho Jerk single.
27 October, 2001: added image for Psyche Rock single. Added image for Les Tribulations d'un chinois en Chine. Added image for Traité des Objects Musicaux on sideman page.
22 October, 2001: added entry in "sideman" for Les Tribulations d'un chinois en Chine by Jules Vernes.
7 October, 2001: added cover variation for Mise en musique du Corticalart.
1 July, 2001: added cover variation of Variations pour une porte et un soupir.
28 June, 2001: added entry for what appears to be the original issue of Panorama of Musique Concrète on Ducretet Thompson.
24 June, 2001: added entry for Canadian version of Too Fortische single.
28 May, 2001: added entry for green label version of Mise en musique du Corticalart.
9 December, 2000: added images for Mexican version of Too Fortische single. Replaced image of Henry/Spooky Tooth single.
4 August, 2000: added image for Machine Danse single. Added entry for Mexican version of Too Fortische single.
10 July, 2000: added another entry for Le Voyage
28 March, 2000: added entry for La Reine Verte
16 March, 2000: added images of Malefices single
13 March, 2000: added entry for Spanish version of Too Fortische single.
13 February, 2000: added catalog number for UK version of Ceremony.
5 February, 2000: added detail to entry for L'Evangile selon St Jean. Added detailed entry for L'Homme du XXIe Siecle.
27 December, 1999: added entry for single from LP with Spooky Tooth and entry for Pierre Schaeffer 3LP set Traité des Objects Musicaux.
2 December, 1999: added entry for pressing variation of Apocalypse de Jean vol. II
10 August, 1999: added Compilation entry for Limelight promotional sampler
9 July, 1999: added entry for Prismes reissue with images. added images for UK version of Le Voyage.
5 July, 1999: added entries provided by Shigeo Kida: Le Voyage, Variations pour une porte et un soupir. Images for Japanese versions of Panorama des musiques experimentales and Musique Concrete.
27 June, 1999: Added details to Orphee entry. Corrected misinformation in compilations regarding Henry realizations. Reorganized simple list form of discography.