Talking to the late "Imagine" singer's son Sean, Elton said: "I think that if your dad had still been alive he would have maybe won the Nobel Peace Prize. He was a uniter and was prepared to go to any lengths to make people see what his point was."

Elton went on to mention the difficulties John faced at the time, saying: "And a lot of peoplea like the FBI, they gave him a hard time, but it didn't deter him. He was peace-loving, brilliant, funny, opinionated, a treasure - we need people like him today."

John, who was also known for his activism, had held a Bed-In for Peace during his honeymoon to Amsterdam. He had also written and recorded "Give peace a chance" in 1969.

Elton also discussed how he met John in 1973 with the two having a "whirlwind bromance" for a few years.