After graduating from Keio University's Faculty of Letters in Aesthetics and Art History, Kohji Setoh completed doctoral coursework at Keio's Graduate School of Media and Governance in Computer Music / Media Art as well as Arts Management. He is a lecturer concurrently for the Department of Environmental Information at Keio University.

Besides releasing music works on labels such as Sonore (France) and SoupDisk (Tokyo), he is often invited to act as a DJ at clubs and festivals worldwide. In addition, as a main member of the media art group flow, he has presented media art works worldwide in exhibitions such as for MoMA (New York's Museum of Modern Art) and Batofar (Paris).

Not limited to activities as an artist, Setoh operates the Japan internet radio pioneer cosmosmile, studies matters concerning the administration of public cultural facilities, participates in investigations of music copyright and profit models in the internet age, and is actively concerned in modern-day musical issues from both academic and applied perspectives.

Setoh was a main contributing author to books such as "Community Hall Policy Evaluation: Facing the Designated Manager System Period" (Keio University Press), "Post-techno[logy] Music" (Oomura Shoten), and his major treatise "Copyright and Business Models of Music in the Era of the Internet" (Cultural Economics, 4-4).