Der Fliegende Holländer, Zurich Opera, Royal Festival Hall
    
      
  
  
  
Bryn Terfel by no means the only treasure on board top Swiss ship
Much more regularly than the seven years it takes the Flying Dutchman's demon ship to reach dry land, the Zurich Opera steamer moors at the Southbank Centre. None of its more recent concert performances up to now has branded itself on the memory as much as its 2003 visit, when chorus and soloists stunned in Wagner's Tannhäuser.