While you read this review, someone somewhere in the world is organising his or her calendar for the next few years to make sure that it will include at least one performance of The Ring. Special flights, advance tickets, holidays and sabbaticals will be juggled with, and ‘The Festival Play of Three Days with a Preliminary Evening’ will be tracked down and added to a pilgrim’s relentless progress. The opportunities are widespread temporally and geographically. Bayreuth manages a new or an adapted production each year, and opera houses and festival sites round the world have become devoted to mounting Ring productions – some at colossal cost and others of ingenious improvisation. Cologne and Adelaide are merely the latest to come to mind, within a month or two of each other this year. Der Ring des Nibelungen has at last become the World Drama that Richard Wagner planned; however its box-office success is taking its composer’s real intention ever further from realisation.