Following the release of her second studio album The Well-Tempered Synthesizer in late 1969, the second featuring synthesized pieces of classical music, Carlos proceeded to change musical direction for her next album. Collaborating with friend and producer Rachel Elkind, the two sought to produce music that was "deliberately minimal" and had "a much longer span" than was typical of contemporary music at the time. The two decided on an album with four long tracks, each loosely based on each of the four seasons, partly constructed with improvised and composed passages. Various field recordings of nature are incorporated into the pieces, including wind on "Fall", bird song on "Spring", and insects on "Summer".
The album was recorded on a 3-Mtape machine, which was restored with modern components in preparation for the album's 1998 remastering.