Magma

MAGMA is one of the most influential European bands since the early 70's and has recorded not a good record but several FANTASTIC albums. They are a concept band whose albums explain the origins and development of the new civilization on Kobaia, and their interactions with the people of EARTH and other planets.

Listen to free mp3s from Prog Archives:

Kobaia (1970)
Mekanik Destruktiw Kommandoh (1973)
La Dawotsin (1981)

Also check out Magma's official website which includes many photos and a link to a radio jukebox featuring full tracks and interviews.