Definition of "terzetto" [ter•zet•to]

• A composition in three voice parts. (noun)
• A vocal (or, rarely, instrumental) trio. (noun)

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• "The scene takes the form of a terzetto, which is worked up with constantly increasing power to a climax of passionate energy, and at last dies away as Marguerite expires."
• "On another occasion, at the same theatre, the prima donna was taken suddenly ill in the midst of a terzetto, in which Tamburini had the bass, and, while supporting her on the stage, this accomplished musician actually took the soprano in his falsetto, and performed the part of the indisposed lady in a manner which drew down universal applause."
• "Gounod may be forgiven even for the soldiers 'chorus, in consideration of the masculine vigour of the duel terzetto -- a purified reminiscence of Meyerbeer -- and the impressive church scene."