"Lunch at home with dear old school friends," Elton Instagrammed on Sunday. "Many of whom I haven't seen for 50 years! It was as if we never left school. So much laughter and so many wonderful memories. #ShareTheLove #PinnerCountyGrammarSchool #Classof58."
The "Rocket Man" musician was especially thrilled to catch up with one pal in particular, and even posted a pic of the two of them. "My oldest pal Keith Francis. A wonderful, loyal friend for 57 years and still counting!" he wrote. "He flew all the way from Australia for our class reunion. Love you so much. #ShareTheLove #PinnerCountyGrammarSchool #Classof58."