The English Baroque Soloists is a chamber orchestra playing on period instruments, formed in 1978 by English conductor Sir John Eliot Gardiner. Its repertoire comprises music from the early Baroque period to the Classical period.The English Baroque Soloists developed from the Monteverdi Orchestra, which was formed by John Eliot Gardiner in 1968. The Monteverdi Orchestra played on modern instruments, and accompanied Gardiner's Monteverdi Choir. In the late 1970s the orchestra transitioned to period instruments and became the English Baroque Soloists. The first concert under the new name was in 1977 at the Innsbruck Festival of Early Music, although the orchestra was not officially formed until 1978. 　　The English Baroque Soloists often appear with John Eliot Gardiner's choir, the Monteverdi Choir. 　　In 1990 Gardiner formed the Orchestre Révolutionnaire et Romantique, another period instrument ensemble. The Orchestre Révolutionnaire et Romantique specialises in a later repertoire than that of the English Baroque Soloists, but shares some players.