The term Concerto (plural concertos or concerti) usually refers
to a musical work in which one solo instrument is accompanied by an
orchestra. The concerto, as understood in this modern way, arose in
the Baroque period side by side with the concert grosso, which
contrasted a small group of instruments with the rest of the
orchestra. While the concerto grosso is confined to the Baroque
period, the solo concerto has continued as a vital musical force to
this day. This article will concentrate on the development of the
solo concerto.