Cabaletta is a two-part musical form particularly favored for arias in 19th century Italian opera in the belcanto era until about the 1850s during which it was one of the era's most important elements. More properly, a cabaletta is a more animated section following the songlike cantabile. It often introduces a complication or intensification of emotion in the plot. Classic examples include "Non più mesta" from La Cenerentola by Rossini (1817), "Vien diletto, è in ciel la luna" from I puritani by Bellini (1835), and "Di quella pira" from Verdi's Il trovatore (1853).