It wasn’t until 2003 that Elvis Presley’s only child Lisa Marie Presley released her debut album, To Whom It May Concern. The record arrived some 26 years after The King’s death, which happened when his daughter was just 9-years-old. Lights Out, the album’s first single reflected on Lisa Marie’s background as Elvis’ kid, while the lyrics even mentioned Graceland’s Meditation Garden where The King’s grave and other relatives are buried.

Lights Out was co-written by songwriter, lyricist and music producer Glen Ballard, who previously worked with Lisa Marie’s ex-husband Michael Jackson on Thriller and other albums.

Speaking exclusively with Express.co.uk, he shared memories of writing music for To Whom It May Concern with Elvis’ daughter.

The 68-year-old said: “She was signed to my label actually; Java Records through Capitol.

“We had this song… which I think is always going to be associated with her, just about the overwhelming burden of being Elvis’ daughter.”

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Asked if there was a connection to working with Jackson and then recording with his ex-wife Lisa Marie, Ballard said it was more just a coincidence.

The 68-year-old said: “It was kind of strange that I got to work with both of them, but separately.

“Nothing surprises me after having so many great people come in and out of my life. I still don’t know how it happens but I’m still grateful when it does happen.”

Ballard was promoting Back to the Future the Musical, for which he wrote the music and lyrics alongside the film’s theme composer Alan Silvestri.

On the time-travelling musical, Ballard said: “We discovered it lends itself perfectly to a two-act musical because we go to the fifties and we go to the eighties. From a musicians’ standpoint, just getting the flavours of those two periods’ music, which are quite different, gave us an opportunity.”

The 68-year-old also confirmed that the Back to the Future theme tune would, of course, feature in the show. He continued: “We’re using it extensively throughout because every time you hear a note of his score you’re back in Hill Valley. So we already have a time machine, it’s called Alan Silvestri’s score.

“We just used it in the most strategic and beautiful way, interwoven with new songs and we still have the greats from the movie: Johnny B Goode, Power of Love, Back in Time, Earth Angel. We never wanted to dance around it. We wanted to firmly embed them where they belong. For us, it was just a gift.”

Back to the Future the Musical is playing at the Adelphi Theatre in London and tickets can be booked here.