The Hiroshima-born electronic music producer Rei Harakami recorded six albums of long-form, abstract ambience between 1998 and 2011, before passing away suddenly from a cerebral hemorrhage at the age of forty. He left behind a singular body of work—a submerged sound of delayed, downtempo techno and reverb-laden, leftfield electronic dance music—and even a handful of records with Akiko Yano. Immersed in film and animation as well, Harakami’s creative pursuits proved boundless, as seen via a recent survey of some early homemade recordings, which encapsulate a sojourner of sound at play with the infinite.