The first of the pieces to be premiered was Übereinstimmung, performed in London on 20 May 1970 by Gentle Fire (at that time its title was Annäherung). A little over two years later Gentle Fire also gave the first performance of Spektren at the Shiraz Arts Festival on 4 September 1972, in the context of a series of concerts featuring Stockhausen's music. Two days later in the same concert series, Kommunikation was premiered by another English group, Intermodulation, though another source says it was on 4 September and by Gentle Fire.
