There are a lot of corpses on stage at the end of Charles Edwards’s production of Tristan & Isolde for Grange Park Opera. At this stage in the drama, directors tend to fade out the bloodbath, the better to focus on Isolde’s final dissolution into bliss. But as Michael Tanner argues, Tristan, like the Ring, offers no bearable solution to its central problem, however much the music – that great deceiver – might try to persuade us otherwise.