Conrad Schnitzler was a prolific German experimental musician and co-founder of West Berlin's Zodiak Free Arts Lab, an early member of Tangerine Dream and founder of the band Kluster. After leaving Kluster in 1971, Schnitzler embarked on an extensive solo career, pushing the boundaries of experimental electronic music. Originally released as a private pressing in 1982, Convex stands as one of Schnitzler's most compelling and underrated works. A minimalist album composed of shrill loops and dissonant notes combined with an icy atmosphere, this darker masterwork opposes the established musical model and features repeating patterns made with acoustic instruments and electronic embellishments.

The album showcases Schnitzler's unique approach to sound as a physical, cerebral experience. All music was produced, composed, performed, recorded and mixed by Schnitzler himself in 1982, exemplifying his role as what he called a "performer of sounds."

Schnitzler studied modern art in Düsseldorf under the direction of fluxus artist Joseph Beuys before moving to Berlin, where he became a central figure in the city's underground experimental music scene. His influence extended beyond the krautrock movement, with his work even providing the introductory music for Norwegian black metal band Mayhem's debut EP.

Convex represents a crucial chapter in the evolution of experimental electronic music, standing alongside Schnitzler's celebrated albums Rot and Gelb as essential listening for those interested in the more uncompromising edges of electronic sound.