A cabaletta, the word used first in the earlier 19th century, is the second, quicker part of an Italian aria in two parts. An example would be Rosina’s Io sono docile (I am biddable), after her Una voce poco fa (A voice, a little while ago), in Rossini’s Il barbiere di Siviglia (‘The Barber of Seville’). The word can also describe the later part of an operatic duet.

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