We hear from an audience member at Welsh National Opera in Cardiff:
In (Verdi’s) Les Vepres Siciliennes, Carlo Rizzi stopped the overture and barked something at the audience when a mobile phone went off. Then in Act One, straight after the opening chorus, another phone (different ringtone).
Rizzi halted the performance and turned and spoke to the audience about how damaging it was for everyone’s concentration. Got a round of appause then continued with the opera.
They are now in the intermission.