The term “ritornello,” derived from Italian, refers to a recurring instrumental passage that serves as a refrain within a vocal or choral work. This section typically appears at the beginning of a movement, returns at intervals, and often concludes the movement. A clear example can be found in many Baroque concertos, where a distinct musical theme is presented by the orchestra (the ritornello) and then alternates with solo passages featuring contrasting melodic or harmonic material.
The presence of this recurring instrumental section provides structural unity and predictability within a composition. It allows for the exploration of contrasting musical ideas while maintaining a familiar framework for the listener. Historically, the use of ritornello form represents a significant development in musical structure, influencing the evolution of forms such as the concerto and aria, and providing a mechanism for balancing stability and contrast in extended musical works. The predictability of the recurring section also provides a grounding point for less predictable solo passages and a platform to showcase the talents of the featured instrumentalists.
