The musical power and dramatic efficacy of Tosca are such that it survives almost all the productions that have been made of it – not always with the same success. The restaging of the Tosca co-production by Liceu and Teatro de la Maestranza from Sevilla, which was already seen in 2014, wasn’t a good idea. The production – dramatically conventional and visually extravagant – was ugly and sad back then and continues to be so despite the changes that have been...