There are multiple artists with this name: 1) Soma is an instrumental, electronic/organic project featuring the talents of David Thrussel from Black Lung / Snog and Pieter Bourke from Dead Can Dance.
The music of Soma is built on the relationship and alliance between melodic/danceable structures and masses of various "found" sounds. The overall effect invokes a cascade of B-grade psychological/horror/thrillers, spaghetti westerns, strangely political sci-fi films and a vast volume of the finest conspiracy literature.

Read more about Soma on Last.fm.