A rare and exuberant exchange of sonic discourse between Chinese and American improvisers recorded in the Yunnan Province of China at the Lijiang Studio artist residency, in a uniquely voiced quintet with Theresa Wong on cello & voice, Lao Dan on saxophone & bamboo instruments, John McCowen on clarinet & recorder, Li Xing on electric & acoustic guitars, and Deng Boyu on percussion & found objects.

Two clarinetists--John McCowen, also the composer, and Madison Greenstone, both on clarinet & bass clarinet--taking the title from Boethius' (427-524 AD) printed work on ancient Greek music: "De institutione musica", as they generate long-form drones using the harmonic interactions and interference patterns of similar tones, overtones, and difference tones; impressively intense.