Violinist Théotime Langlois de Swarte is active in both Baroque and more recent repertory, using various instruments. He is noted as a soloist, chamber music player, and member of several leading historically oriented Baroque groups. De Swarte joined the venerable Les Arts Florissants in 2015, and he has performed with its leader, William Christie, in chamber concerts. He has also performed or recorded with other leading Baroque groups, including Ensemble Les Ombres and Les Nouveaux Caractères. De Swarte has founded two groups of his own. He released his debut album, The Mad Lover, in 2020 with lutenist Thomas Dunford. In 2021, he released a pair of albums, Générations (featuring Christie) and Proust, Le Concert Retrouvé, representing a concert that might have been played at a salon described by novelist Marcel Proust in The Remembrance of Things Past.