We spent much of our spare time during the early 80's experimenting with synthesizers, sound collage, etc., and during that period we recorded some 30 odd cassettes as Alto Stratus (and under other guises: as Vrije, Q.S.O., Electric Junk), also as soloists, and the trio with sound artist Nigel Harris in ZBB.

The history of early Alto Stratus runs from Industrial and avant-garde explorations to a more cohesively musical style. Some early works involved layering sounds, aka "plunderphonics". Stockhausen meets Tangerine Dream, Throbbing Gristle meets Heldon or Conrad Schnitzler. Instruments: analogue synthesizers, echo guitars, loops, voices and much tape collage.

After a 10 year hiatus, when we established Ultima Thule, we returned with "Catharsis" and further albums, plus other projects: Endgame, Triax, Quadelectronic, etc. Currently 30 albums are availalable.