Darmstädter Ferienkurse
Musik für ein Haus is a group-composition project devised by Karlheinz Stockhausen for the 1968 Darmstädter Ferienkurse. Fourteen composers and twelve instrumentalists participated, with the resulting performance lasting four hours. It was not regarded by Stockhausen as a composition belonging solely to himself, and therefore was not assigned a number in his catalog of works.