What is the primary function of a concerto in classical music?

The primary function of a concerto in classical music is to showcase a solo instrument accompanied by an orchestra. This form spotlights the virtuosic capabilities and expressive abilities of the soloist while also allowing for interaction between the solo instrument and the orchestral ensemble. The interplay between the featured soloist and the orchestra is fundamental to the concerto's structure and appeal, emphasizing contrast and dialogue.

This format not only highlights the technical prowess of the soloist but also integrates orchestral support that complements the solo passages, creating a rich musical conversation. The concerto typically follows a three-movement structure, often with the first movement being in sonata form, allowing for a combination of thematic development and elaborate solos that further enhance the soloist's prominence.