 Among the most well-known Baroque works for the cello are Johann Sebastian Bach's six unaccompanied Suites.Other significant include Sonatas and Concertos by Vivaldi, and earlier works by Gabrieli, Geminiani, and Bononcini.As a basso continuo instrument basso continuo the cello may have been used in works by Francesca Caccini (1587–1641), Barbara Strozzi (1619–1677) with pieces such as "Il primo libro di madrigali, per 2–5 voci e basso continuo, op.