Tunisian-born mezzo-soprano Rihab Chaieb is a graduate of the COC Ensemble Studio (Semele, La clemenza di Tito), and she’s currently in Toronto to be a Valkyrie. She sings Waltraute in Atom Egoyan’s production of Die Walküre, opening January 31st at the Four Seasons Centre. I asked her about being the production, and what she’s learned about the art and the business of opera.