Vienna Boys' Choir
Prominent visitors to the school include cellist Mstislav Rostropovich, the Vienna Boys' Choir, former Hungarian president Árpád Göncz, Russia's first lady Lyudmila Putina, Defense Minister of the Russian Federation Sergei Ivanov, Michael I and Queen Anne of Romania, American Ambassador to the Kingdom of Belgium Tom C. Korologos, and Her Majesty Queen Fabiola of Belgium.