Special guest at the Hungarian State Opera Ball, February 14, 2015
"The 2015 Faust Ball, a night of scientists and artists is to be organized on 14 February. Special guest stars of the event are Angela Gheorghiu, a star of the international world of opera, and Carlos Acosta, principal guest artist of The Royal Ballet" is stated on the official website of the Hungarian State Opera.
The leaflet gives more details. Tickets are available at about 200 euro/ticket.