"Showered with flowers and congratulations, Spanish star tenor Plácido Domingo marked the 3,500th opera performance of his career Tuesday in Vienna. After the singer's performance in Il Postino at the Theater an der Wien, the theatre's staff presented Domingo with a cake that was decorated with the words, 'World Champion of Opera.' 'I am happy, proud and thankful that I can celebrate this event here,' the opera star said."