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England, 17th June 1969, Princess Irene of Greece takes a bow with her distinguished piano tutor Gina Bachauer on stage at the Royal Festival Hall after Princess Irene made her British debut as a concert pianist (Photo by Paul Popper/Popperfoto/Getty Images)

England, 17th June 1969, Princess Irene of Greece takes a bow with her distinguished piano tutor Gina Bachauer on stage at the Royal Festival Hall after Princess Irene made her British debut as a concert pianist  (Photo by Paul Popper/Popperfoto/Getty Images)