Le Poème Harmonique is a French Baroque ensemble that focuses on music of the 17th and 18th centuries. The group has been a pioneer in exploring Baroque music in the context of the other arts and has appeared in and recorded major lost works of Baroque opera and ballet. Le Poème Harmonique was founded in 1998 by lutenist Vincent Dumestre, who remained its director as of the mid-2020s. The group's recording debut followed quickly in 1999 with the album Domenico Belli: Il Nuovo Stile. Le Poème Harmonique has enjoyed an unusually successful recording career, with sales of more than 150,000 albums and DVDs. In 2023, the group backed mezzo-soprano Stéphanie d'Oustrac on the album Mon Amant de Saint-Jean, which mixed 17th century music with French popular song.