She is well known for singing the Olympic Hymn (Hymne Olympique) at the opening and closing ceremonies of the 1994 Winter Olympics in Lillehammer, Norway; for duets with Plácido Domingo and Charles Aznavour at the "Christmas in Vienna" concert of 1994, José Carreras, Andrea Bocelli, Bryn Terfel, Josh Groban, Neil Sedaka, Mario Frangoulis, Russell Watson, Brian May, Tommy Körberg, Diana Krall, Warren G, Dee Dee Bridgewater and The Chieftains; and her participation on the Titanic film soundtrack.