Ritornello

Ritornello is Italian for ‘little return’. In musical form it refers to a recurring instrumental passage — most commonly the orchestral refrain that returns between solo episodes in a Baroque concerto. The structure is essentially: orchestral ritornello — solo episode — orchestral ritornello — solo episode — and so on, often with the ritornello reappearing in different keys.

The ritornello principle is fundamental to the Baroque concerto. Vivaldi’s concertos are built almost entirely on this structure: a memorable orchestral ritornello establishes the principal theme; solo episodes elaborate, contrast, and develop; the ritornello returns in different keys to provide structural unity.

The term is also used in 18th-century vocal music — operatic arias often have an instrumental ritornello that frames the vocal line. In modern usage, ‘ritornello’ refers more broadly to any recurring instrumental refrain.

Italian, diminutive of ritorno (‘return’), from Latin retornare.

When the ritornello returns, treat it as a structural anchor. The audience should recognize the return; play with thematic clarity and rhythmic stability.