Each contributor created two mins of raw sound - a single track recorded live with no post-processing. After each set of four tracks arrived, they were blindly put together to create each track - as and when they arrived in Corporal Tofulung’s inbox.
The levels were adjusted so that quiet tracks could be heard. Otherwise there was no post production.
EDIT: A second album is has been released, spooky mallet Resonance Knifespoon.