Sebastian Arthur Hau is the art director
 and head of the books and events department at Le BAL in Paris. He founded Supermarkt 
(the forerunner of COSMOS) with Olivier Cablat in 2009, Yellow Magic with Pierre Hourquet, Benoit Vollmer, and Eduardo Serafim in 2013, and Polycopies with Laurent Chardon in 2014. Mr. Hau writes 
for magazines such as Foam, IMA magazine and Else on a regular basis and organises sessions on photography at the Silencio Club in Paris. He has curated exhibitions in Warsaw, Leipzig, Cologne, Arles, and Paris.