Zweistein was the project of German pop singer Suzanne Doucet (disguised under the moniker Jacques Dorian). The triple-LP album Trip, Flipout, Meditation (october 1970) was a post-psychedelic sound collage that drowned naive melodies under a thick layer of studio effects.

Doucet later became a pioneer of new-age music with the instrumental albums Transformation (1982) and Transmission (1983).