This Web site recently reported on the Elton John AIDS Foundation's latest fundraiser, held in Windsor.
Elton has posted a photo of himself with one of the guests, Joan Baez, on his Instagram page.
He says it was ''a dream to play'' with Baez at the event in his garden.
Elton adds: ''Over £3 million was raised for the fight against HIV/AIDS. Huge thanks to all our loyal and generous supporters. And massive thanks to our wonderful event sponsor, Bulgari.''