 22".The quadraphonic electronic and concrete music of "Hymnen" was realised at the Electronic Music Studio of the Westdeutscher Rundfunk (WDR) in Cologne.The world première was of the version with soloists, and took place on 30 November 1967 in a concert of the WDR concert series Musik der Zeit, at the auditorium of the Apostel Secondary School in Cologne-Lindenthal .