D'Indy used this instrument several times; in his "Symphony No. 2 in B, Op. 57" (1902-3), "Jour d'été à la montagne, Op. 61" (1905), "Souvenirs, Op. 62" (1906), "Symphony No. 3 (Sinfonia Brevis - de bello gallico), Op. 70" (1915), and "Poème des rivages, Op. 77" (1919–21). The contrabass was also used in Strauss's "Elektra" (1908), and Schoenberg's mammoth cantata "Gurre-Lieder" (1913), with the latter scored for a section of seven trombones including alto and contrabass. Puccini's last opera "Turandot" (1924) also employed the contrabass trombone, albeit that they were scored for the Italian-valved contrabass instrument (the ""Cimbasso""). Although the contrabass trombone has not proven to be a permanent addition to the opera or concert orchestra, and is only required in a small number of mainly 20th century works, it has become increasingly used in film scores in recent years. Pierre Boulez wrote for the contrabass trombone in his work "Pli selon pli" ("Fold By Fold").