 In 1964, Müller worked on the Free German Trade Union (FDGB) project “Junge Tierzüchterin” (young farmer) at the agricultural collective in Merbitz.In the 1950s, Müller paid regular visits to the artist couple Herbert Kitzel (1928–1978) und Mareile Kitzel at Talstraße 23 (now a gallery), as well as Hilmar and Heidi Manthey.It was here that he met Otto Möhwald (b.