La plus que lente, L. 121 (French pronunciation: ​[laplyskəˈlɑ̃t], "The more than slow"), is a waltz for solo piano written by Claude Debussy in 1910, shortly after his publication of the Préludes, Book I. The piece debuted at the New Carlton Hotel in Paris, where it was transcribed for strings and performed by the popular 'gipsy' violinist, Léoni, for whom Debussy wrote it (and who was given the manuscript by the composer). Debussy arranged the piece for small orchestra (flute, clarinet, piano, cimbalom and strings) which was published in 1912.