obbligato
US /ˌɑːb.ləˈɡɑː.t̬oʊ/
UK /ˌɑːb.ləˈɡɑː.t̬oʊ/
1.
a musical accompaniment that is essential and not to be omitted
:
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The flute played an exquisite obbligato throughout the aria.
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The violin part is an obbligato, crucial to the harmony.
1.
(of a musical part) essential and not to be omitted
:
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The cello has an obbligato role in this movement.
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The composer marked the trumpet line as obbligato.