Herein lies the entire recorded output - save for an appearance on the 1983 Broken Flag “Crusade” compilation tape - of French Musique Concrète composer Jean-Baptiste Barriere, issued as a pair of LPs on Atem magazine’s short-lived record label - where they sat, somewhat uncomfortably, alongside canonic RIO sides by Univers Zero, Art Zoyd, This Heat, Aqsak Maboul, Present, and Fall of Saigon.Composed from 1975-1976, then issued as two separate LPs in 1979, the “Pandemonium” suite encompas…