In 1963, Lutosławski fulfilled a commission for the Music Biennale Zagreb, his "Trois poèmes d'Henri Michaux" for chorus and orchestra. It was the first work he had written for a commission from abroad, and brought him further international acclaim. It earned him a second State Prize for music (Lutosławski was not cynical about the award this time), and Lutosławski gained an agreement for the international publication of his music with Chester Music, then part of the Hansen publishing house. His String Quartet was first performed in Stockholm in 1965, followed the same year by the first performance of his orchestral song-cycle "Paroles tissées". This shortened title was suggested by the poet Jean-François Chabrun, who had published the poems as "Quatre tapisseries pour la Châtelaine de Vergi". The song cycle is dedicated to the tenor Peter Pears, who first performed it at the 1965 Aldeburgh Festival with the composer conducting. The Aldeburgh Festival was founded and organised by Benjamin Britten, with whom the composer formed a lasting friendship.