Aphex Twin, 1992. The ambient-techno foundation. Xtal, Pulsewidth, We Are the Music Makers.
From Wikipedia
Selected Ambient Works 85–92 is the debut album by the British electronic music artist and producer Aphex Twin, whose real name is Richard D. James. It was released on 9 November 1992 through Apollo Records, a subsidiary of the Belgian label R&S Records. The album consists of ambient techno James recorded on cassette as early as 1985, when he was 13–14 years old. It received acclaim and entered the Dance Albums Chart at No. 6 in December 1992.