Ah, the classics. As everyone knows there are two types of performances that involve people singing on stage. There is opera – grand stories, big voices, elitist and not for the plebs – and there is musical theatre – shallow plots, jazz hands, available to the saturday night, ‘gotta catch a show crowd’. And as everyone really knows, the last sentence is rubbish. Opera can be accessible and musical theatre can be amazingly deep in plot and composition.