While hardly a rarity, Gaetano Donizetti’s comic opera L’Elisir d’Amore (The Elixir of Love) doesn’t usually rank in popularity with the likes of Aida, La Bohème or Carmen. But after a performance such as that which acted as the curtain-raiser for the Macau International Music Festival, it can be hard to understand why not. Effortlessly enjoyable, the work also contains passages of aching beauty and contains more insights into human nature than its rom-com surface would let on.