The audience at yesterday's Opéra d'Avignon rehearsal of La traviata were not at all pleased when Patrizia Ciofi started to walk through the part of Violetta without singing it.
Feeling unwell, as she explained on her Facebook page, she preferred to save her voice for the first show. The hissing of the audience was so loud it forced the orchestra to stop, and the curtain had to be dropped.
Forumopera were quick to berate their fellow-Frenchies' disruption of a performance for which the artists were unpaid and the tickets were free. As they rightly point out, it's rather like booing a footballer for missing a penalty in a training session.