"They had a legendary love," said Sean Ono Lennon, the son of former Beatles member John Lennon and artist Yoko Ono.

"For 10 minutes the New Yorkers stood up," said Elton John on performing with John Lennon. "It was like everybody had been ...

The iconic couple's only son produced an expansive box set of his father's 1973 album 'Mind Games,' which he tells PEOPLE is ...