Arguably the most famous cabaletta ever, "Di Quella Pira" is sung by Manrico, in the Third Act of Il Trovatore, after the wonderful cantabile "Ah si, ben mio". Manrico is informed by Ruiz that her mother is at the stake, and about to be burned, and he runs to her rescue... or rather, to his undoing.
Di quella pira l'orrendo foco
Tutte le fibre m'arse avvampò!...
Empi spegnetela, o ch'io tra poco
Col sangue vostro la spegnerò...
Era già figlio prima d'amarti
Non può frenarmi il tuo martir.
Madre infelice, corro a salvarti,
O teco almeno corro a morir!
Of course, a major anecdote on this cabaletta are the high Cs introduced by tenor Enrico Tamberlik (some say it was Carlo Baucardé), and not written by Verdi, but that since this moment, were considered a kind of challenge for all tenors singing the role. As the ideal voice for Manrico is a spinto (though a lyrical tenor can be also effective), those tenors usually get a strong center but it's difficult for them to reach a high C, so is a recipe for problems in the cabaletta.
Let's hear the young Jussi Björling: