Air "Zeffiretti, che sussurrate" ("Solely through you, my sweet love") from the opera "Orlando finto pazzo" ("Orlando, the fake madman", 1714, RV 727, on which the 1723 air "Onde chiara che sussussurate" from the opera "Ercole su'l Termodonte" is based, RV 749.21 and 749.31 [with a second soprano as echo], Antonio Vivaldi), libretto Grazio Braccioli, based on the epic "Orlando innamorato" ("Orlando in love", 1495, Matteo Maria Boiardo) - Origille