English: Lulli composed the incidental music for a ballet, La Princesse d'Elide, which formed part of Molière's divertissement, “Les plaisirs de l'île enchantée,” written for a great festival at Versailles on the 7th of May 1664. A copy of the music for this ballet, made about 1680, is preserved in the library of the Fitzwilliam Museum, Cambridge. The music contains a piece entitled “Les violons et les cors de chasse,” which has two staves, and on both the music is characteristic of the horn, with which the violins would play in unison. The piece finishes on B♭(shown in this image) and to play this note as the second of the harmonic series, the fundamental not being obtainable, the tube of the horn must have been over 17 ft. long. Among Philidor's copies of Lulli's ballets preserved in the library of the Paris Conservatoire of Music (vol. xlvii., p. 61) is a more complete copy of the above.