Olivia Newton-John Pictures

SYDNEY, AUSTRALIA - MARCH 14: Barry Gibb and Olivia Newton John perform on stage during the Sound Relief concert at Sydney Cricket Ground on March 14, 2009 in Sydney, Australia. The Melbourne and Sydney simultaneous concerts have been organised to raise funds for victims of the recent Victorian bushfires and Queensland floods, with profits split equally between the two causes. (Photo by Mark Metcalfe/Getty Images)