His orchestra is small&colon; oboes; strings; and basso continuo of harpsichord, violoncello, violone, and bassoon. There are several different instruments that have historically been called by the name "violone". The continuo part was printed as a figured bass for violone and harpsichord. For example, Sonatas 1 through 11 are for two violins, violone, and organ. The continuo including violone and organ, playing throughout, is not shown. For the basso continuo, separate violone and organ parts are provided. The continuo part is played by organ, bassoon, cello and violone in most movements. The double bass, however, has developed from both the violone and the "bass-viola da gamba". The violone is also not always a contrabass instrument. Historically "violone" has referred to any number of large fiddles, regardless of family. The double bass is sometimes confusingly called the violone, bass violin or bass viol.