Anna Netrebko and Elina Garanca will attend the Wiener Opernball on 3. March 2011

The 55th Wiener Opernball, the most glamourous event of the year in Wien, will be on 3. March 2011. Among the invited guests who will attend the event, the star mezzo-soprano Elina Garanca, who will sing two arias, and the star soprano Anna Netrebko.