D-flat major while for the return of the second theme in the first movement. Claude Debussy also switches from D-flat major to C-sharp minor in the significant section in his famous "Clair de lune". Antonín Dvořák's "New World Symphony" likewise switches to C-sharp minor for a while for the significant section in the slow movement. D-flat major is enharmonic to C-sharp major. In music for the harp, D-flat major would be preferable, not only because harp strings are more resonant in the flat position and the key has fewer accidentals, but also because modulation to the dominant key is easier (by putting
Au clair de la lune clair de la lune" as the basis of his song "Pierrot" ("Pantomime", L. 31) from "Quatre Chansons de Jeunesse". Erik Satie quoted this song in the section "Le flirt" (No. 19) of his 1914 piano collection "Sports et divertissements". In 1926, Samuel Barber rewrote "H-35: Au Claire de la Lune: A Modern Setting of an old folk tune" while studying at the Curtis Institute of Music. In 1928, Marc Blitzstein orchestrated "Variations sur 'Au Claire du la Lune'." In 1964, French pop singer France Gall recorded a version of this song, with altered lyrics to make it a love song.