In addition to "Stimmung", the Collegium Vocale performed other works by Stockhausen, notably as part of the ensemble of musicians who appeared with him at Expo '70 in Osaka, Japan, between March and September 1970, where individual singers of the group performed "Spiral" for a soloist with a short-wave radio. On 5 June 1971 the Collegium Vocale participated in the world premiere of Stockhausen's "Sternklang" in the Tiergarten in Berlin, and appeared also in subsequent performances in the Englischer Garten in Munich, at the Shiraz Arts Festival in 1972, in the Parc Franck Delmas at the La Rochelle Festival in 1974, and in the Parc de Saint-Cloud in 1975. Four members of the group also took part in a studio recording of the work made in June 1975. In the meantime, they had also participated in the world premiere of his "Alphabet für Liège" on 23 September 1972.