Les Siècles is a historical performance ensemble that uses appropriate instruments to realize works of various eras, often employing instruments from the group's own collection. Unusually, Les Siècles apply historical performance principles to music as far forward in time as the early 20th century. Les Siècles was founded by conductor François-Xavier Roth. It performs regularly at multiple Paris venues as well as touring internationally. The group participated in a 100th-anniversary re-creation of the original performance of Stravinsky's Le sacre du printemps, using only instruments that would have been available in Paris in 1913. Les Siècles have amassed a catalog of some 20 recordings, beginning with an album devoted to Saint-Saëns. The year 2020 saw three new Les Siècles recordings, and in 2021, the group issued a recording of Beethoven's Symphony No. 3.