Sicilienne (allegro molto moderato)- the movement although in the traditionally sad key of G minor, represents, in Larner's view, "the one moment of happiness shared by Pelléas and Mélisande". Pelléas and Mélisande (French: Pelléas et Mélisande) is a Symbolist play by Maurice Maeterlinck about the forbidden, doomed love of the title characters. The work was very popular. It was adapted as an opera by Claude Debussy, and it inspired other contemporary composers, including Gabriel Fauré, Arnold Schoenberg, and Jean Sibelius.—wikipedia