Every so often you go to an event where the excitement and anticipation among the audience beforehand is palpable, and that was the case at the opening night of Scottish Opera’s Tosca at Glasgow’s Theatre Royal. You could feel it building in the walk up to the doors and by the time the curtain was raised the atmosphere was electric. With such anticipation this Tosca had a lot to live up to but luckily for all of us it managed to and so much more. The stage in Act One was set