Oskar Schlemmer was a German painter, sculptor, designer and choreographer associated with the Bauhaus school.
In 1923, he was hired as Master of Form at the Bauhaus theatre workshop, after working at the workshop of sculpture. His most famous work is Triadisches Ballett (Triadic Ballet), which saw costumed actors transformed into geometrical representations of the human body in what he described as a "party of form and colour".
Along with Schlemmer's diary, his private letters to Otto Meyer and Willi Baumeister have given valuable insight on what happened at the Bauhaus; especially his writings of how the staff and students responded to the many changes and developments at the school.