Answer:
A Solo Concerto is a concerto i which a single soloist is accompanied by an orchestra. It is the most frequent type of concerto. It originated in the Baroque Period (approx. 1600 - 1750) as an alternative to the traditional Concertino in a concerto grosso.
Concerto = an instrumental work that maintains contrast between an orchestral ensemble and a smaller group or a solo instrument, or among various groups of an undivided orchestra. (fast-slow-fast) three movements.
Concertino = The group of solo instruments in a concerto grosso.
Concerto Grosso = a musical form, common in the Baroque period, in which contrasting sections are played by full orchestra and by a small group of soloists.
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