The 1920's was Schlemmer's most productive years. In 1920 he accepted a position at the Master of form at Walter Gropius' Bauhaus in Weimar. At Bauhaus Oskar was appointed as a master of the mural painting and sculpture workshops, this was before heading to theatre in 1923. In theatre Oskar's main interest was ballet. Schlemmer's famous piece Triadic Ballet was first performed in 1922 and it was a huge success at Bauhaus in 1923.