A side project of Neige of Alcest, the group was formed with musicians Audrey Sylvain and Fursy Teyssier in the summer of 2004.

Their goal was to create music that "reflects the dark side of the industrial era and modern civilization".

It was recorded during the winter of 2008 in the Klangschmiede Studio E with Markus Stock from Empyrium,[2] and it is described by the band as "a kaleidoscopic soundtrack for the modern era".

[2] Pitchfork gave the album a 7, calling it a "journal of triumph and heartbreak" and "a fervid last gasp of genre-melding creativity".

[1] Allmusic writer Ned Raggett gave it a 3-star rating, stating "the most notable thing about Amesoeurs is how little of a unique identity it has in the end.