This month John Lennon’s estate has re-released 1973’s Mind Games: The Ultimate Collection as a special box set featuring new mixes.

Some have been worked on to amplify the late star’s voice, while others emphasise the instruments. Promoting the release is his younger son Sean Lennon, who he had with Yoko Ono.

Speaking with The Times, he said of his parents: “Their story is a love story. They found each other across a great divide and certainly struggled through ups and downs, but never doubted their love. It is important we remember them as an example. Even through rough patches, you can see my father thought about my mother. They were simply, irrevocably intertwined.”

Meanwhile, Sean also spoke of what made his father’s solo music stand out from his Beatles tracks.

Sean added: “One thing that distinguishes my dad’s solo career,” Sean says, “is how personal his lyrics became. It is like a diary, and it is my duty to bring attention to my father’s music. Not just my duty to him, but a duty to the world. With the world as it is now, people have forgotten so many things that I never imagined could be forgotten. I refuse to let that happen to this music — it means too much to me.”