The singing varied from good to great. For my money, the star was Simon O'Neill as Siegmund. His tenor voice was heroic and burnished, and he looked young and virile. If he graduates to the role of Siegfried in the future, I hope I'm there to hear it.Me too.
UPDATE: Singing Siegmund in the next three Covent Garden performances was Placido Domingo, whom Simon has been understudying in this role at The Met. So you can see what it's all about, here at YouTube is Placido and the stunning Waltraud Meier burning up the stage as Siegmund & Sieglinde (Wagner's 'Adam & Eve) in the 2005 Proms -- six minutes described by writer Chris Brodrick as "so hot I suggest you turn on your air conditioning or sit by the open fridge. Be careful you don't get blown out of your chair by the roar at the end. Absoutely stunning!"