阿吽 (A-un) has it's origins in the first and last graphemes of the Sanskrit Devanagari and when presented together represent the absolute. They are the furthest limits that demarcate the space of all that is united between.
The pairs of Komainu (often called lion-dogs in English) that guard the entrance to many Shinto shrines and Buddhist temples embody these ancient graphemes phonetically. On the right hand side with it's mouth open the A-gyo Komainu expresses the principal A sound, also said to be the first sound uttered after birth. And on the left hand side the Un-gyo Komainu with it's mouth closed, expresses the ultimate grapheme of the Devanagari, the Un sound also illustrative of the final sound we make after we draw our last breath. The Komainu reify the totality of sound and it's inherent connection to life.
Field Recordings From Kyushu is a document of some of the sounds of life familiar to Kyushu in Western Japan.