A Music for Professionals.

For much of the Baroque period keyboard instruments like the organ and harpsichord were the preserve of professional musicians. Organs and harpsichords were expensive instruments that were not readily available to many amateurs. The organ was, by and large, an instrument used in churches, while the harpsichord, although sometimes present in the homes of wealthy merchants and city dwellers, figured most prominently in the musical establishments of Europe's courts. Most often, professional keyboard players served as church organists, although some were also employed at court as harpsichordists. In these roles professional keyboard players were expected to accompany singers, other instruments, small ensembles and orchestras, as well as choirs and congregations. These tasks required the keyboard player to be able to improvise chords and basso continuo accompaniment and to be able to provide improvised interludes and preludes during the services of...