Here are a few soundbites from a demo I made:

“O Isis und Osiris” – Sarastro’s aria from Die Zauberflöte (Mozart)

Gremin’s aria from Eugen Onegin (Tsjaikovsky)

“Vecchia zimarra” – Coline’s aria from La Bohème (Puccini)

Scene of Le Philosophe Pilone from Perelà, Uomo di fumo (Dusapin)