Not to be confused with the international chemical company of the same name, the Köln-based duo of Cem Oral and Ingmar Koch (who go by the names Jammin' Unit and Walker, respectively) have been making hard-hitting experimental acid and techno as Air Liquide since the early '90s. Recording first for their own Structure label group before signing with Rising High in 1993, the pair currently record for the New York-based Smile Communications, as well is in various side projects for labels such as DJungle Fever, Anodyne, Blue Angel, and Oral's own Pharma imprint. Although the pair...