오페라, 오라토리오 등 규모가 큰 성악곡의 대본이나 가사.
The written text or script of an opera, oratorio, or other long vocal musical work.
예문:
"The composer spent months searching for a poet who could write a compelling libretto for his new opera."
"Reading the libretto before the performance helped the audience follow the complex plot of the Italian opera."
"Lorenzo Da Ponte is famously known for writing the libretto for several of Mozart's most celebrated works."