Mark So is composer and performer from Los Angeles.

He is a prolific and eloquent advocate of the experimental tradition after Cage. His works uphold, through every conceivable strategy, the delicate boundary between restriction, chance, aesthetic beauty and imperceptibility, often demanding great attention through changing experiences of silence.

As critic Petra Hedler writes: "Mark So strongly embraces the phenomenon of the just barely audible, taking up a broad palette of sound-producing devices (including glasses, stones)."

He is also a fierce advocate of anarchic distributive and social economies in the arts. Over the past ten years, he has created an astonishing collection of scores, numbering in the hundreds, which he freely distributes to his immediate musical community. The works are typically performed in anonymous, open environments with little or no fanfare.

Mark So co-headlined Human Ear's 2009 summer concert series with William Basinski. He has collaborated with Julia Holter and Michael Pisaro. His composition "Jason Grier" was premiered in the high desert in June 2010.