Opus 17A, a music CD, is a work for double bass that the artist composed immediately after finishing Kulturgeschichte 1880-1983. It was first performed at the opening of Darboven's exhibition at Dia on Wednesday, May 1, 1996.
The original recordings for UHMM were made by Martin Kreyssig during an interview between Richard Deacon and Dr. Julian Heynen while sitting on a bandstand in the Stadtpark, Krefeld, Germany on May 13, 1991. The interview was used in the 16mm film 'The Interior is always more difficult' by Martin Kreyssig on the architecture of Mies van der Rohe and the exhibition of Richard Deacon, Museum Haus Esters and Museum Haus Lange, Krefeld, May 12 to July 14, 1991. Uhmm is formed from the material not used in that film.