DictionaryobbligatoEssential musical accompaniment
noun / adjective

obbligato

ah-bluh-GAH-toh/ˌɑːblɪˈɡɑːtəʊ/

An accompanying musical part essential to a composition.

The aria requires a flute obbligato alongside the vocal melody.

A flutist plays an essential accompanying part alongside a singer in chamber performance, both attentively coordinated, only minimal musical notes on score, no prose.
Etymology

Binding became a figurative image for obligation: obbligato literally means “obligated.” In music, it marks an accompanying part as required rather than optional—important enough that it cannot be omitted.

In context

LibriVox Audiobooks87:35
The jingling of our equipment, the squelching of boots in mud, the labored breathing of weary men, an occasional curse, was like an obbligato to the thunderous storm of war
Everyman at War. Sixty Personal Narratives of the War by Charles B. Purdom Part 1/3 | Audio Book

More examples

  • She plays the obbligato while the choir sings.
  • The obbligato violin part cannot be left out.
  • Both arias feature expressive oboe obbligatos.

Forms

obbligato · obbligatos · obbligati

Similar words

accompaniment
Supports the main musical part but is not necessarily indispensable.