In 1950 Nono first attended the Darmstadt Summer Courses for New Music which saw the world première of his Variazioni canoniche sulla serie dell’op. 41 di Schoenberg. By using the twelve-note series from Schoenberg’s anti-Fascist Ode to Napoleon Op. 41, Nono, a member of the Italian Communist Party since 1952, referred to its political statement. At the Hamburg performance of Schoenberg’s opera Moses und Aron he met Schoenberg’s daughter Nuria whom he married a year later. Dedicated to her is Liebeslied for mixed choir and instruments which was first performed in London in 1956