obbligato

US /ˌɑːb.ləˈɡɑː.t̬oʊ/
UK /ˌɑːb.ləˈɡɑː.t̬oʊ/
"obbligato" picture
1.

obbligato, partie obligatoire

a musical accompaniment that is essential and not to be omitted

:
The flute played an exquisite obbligato throughout the aria.
La flûte a joué un obbligato exquis tout au long de l'aria.
The violin part is an obbligato, crucial to the harmony.
La partie de violon est un obbligato, cruciale pour l'harmonie.
1.

obligatoire, essentiel

(of a musical part) essential and not to be omitted

:
The cello has an obbligato role in this movement.
Le violoncelle a un rôle obligatoire dans ce mouvement.
The composer marked the trumpet line as obbligato.
Le compositeur a marqué la ligne de trompette comme obligatoire.