 For most of 1975-78, he spent a great deal of time drawing in black ink, and had exhibitions at galleries in Zürich, Amsterdam, Cologne, and Rotterdam.Fischli and Weiss met in 1978 and subsequently formed a short-lived rock band, Migros.Their first collaborative venture was a series of ten colour photographs, "Wurstserie" ("sausage series", 1979), depicting small scenes constructed with various types of meat and sausage and everyday objects, with titles such as "At the North Pole" and "The Caveman".