Which Saturday afternoon opera shall the cher public discuss?

• Houston Grand Opera: La Cenerentola (Rossini). Joyce DiDonato, Lawrence Brownlee, Patrick Carfizzi, Earle Patriarco, Nikolai Didenko; Edoardo Müller.

• Royal Opera, Covent Garden: Don Carlos (Verdi). Jonas Kaufmann, Marina Poplavskaya, Simon Keenlyside, Ferruccio Furlanetto, Marianne Cornetti, John Tomlinson; Semyon Bychkov.

• Washington National Opera: Der Fliegende Holländer (Wagner). Alan Held, Jennifer Wilson, Gidon Saks, Ian Storey, Andreas Conrad; Heinz Fricke.

• Metropolitan Opera: La Gioconda. (Ponchielli). Zinka Milanov, Kurt Baum, Fedora Barbieri, Leonard Warren, Cesare Siepi, Jean Madeira; Fausto Cleva.

• Gran Teatre del Liceu: Król Roger (Szymanowski).Anne Schwanewilms, Scott Hendricks, Francisco Vas; Josep Pons.

• Other: