Proper noun
Donaueschingen
A town in the Black Forest, Baden-Württemberg, Germany.
According to Otto Luening, Cage also performed a William sic Mix at Donaueschingen in 1954, using eight loudspeakers, three years after his alleged collaboration. Source: Internet
The piece was composed for the Donaueschingen Festival of contemporary music of 1962, and its performance was regarded as provocative and controversial. Source: Internet