Morton Subotnick, 4 Butterflies (side A)

The most notable thing about 1974's 4 Butterflies is the extreme dynamics, which are preserved impressively on vinyl. Subotnick's synth mayhem is consistent no matter the volume. The quiet parts are constantly evolving and changing, with neither the pulse nor ambience that might be common in such electronic music. The loud parts are equally chaotic but never noisy. 4 Butterflies feels pretty isolated from most obvious trends of electronic music, perhaps because it predates so many of them.