 The concept was introduced in 1968 by the German composer Karlheinz Stockhausen (; ), with specific reference to the collections of text-notated compositions "Aus den sieben Tagen" (1968) and "Für kommende Zeiten" (1968–70).The first public performance of intuitive-music text compositions, however, was in the collective work "Musik für ein Haus", developed in Stockhausen's 1968 Darmstadt lectures and performed on 1 September 1968, several months before the first realisations of any of the pieces from "Aus den sieben Tagen" (; ; ).Intuitive music may appear to be synonymous with free improvisation or with improvised playing within open composition forms, but the collectively intuitive aspect, the emancipation from known music genres and the meditative dimension are especially emphasized by Stockhausen