On 24 May, Omer Meir Wellber will conduct the Vienna Radio Symphony Orchestra at the Red Ribbon Celebration Concert in the Burgtheater in Vienna. The gala concert, featuring Anna Netrebko, Elisabeth Kulman, Erwin Schrott, Piotr Beczala, Ildebrando D’Arcangelo, René Pape and others, supports the Clinton Health Access Initiative, one of the most important global organizations fighting HIV and AIDS. President Bill Clinton will be present and personally address the audience.