(Credit: Teatro Comunale di Bologna/Vincent Pontet-Opera de Paris) This week, four rarely performed works get stagings and concert performances with formidable casts that should not be missed. There are also some classics with all-stars casts that make them unmissable. Macbeth – Wiener Staatsoper, Austria Plácido Domingo returns to the Vienna stage amidst sexual misconduct allegations to sing the title role {…}