The Royal Albert Hall has witnessed countless moments of grandeur, but nothing quite like this. On the anniversary of Princess Diana’s passing, Neil Diamond — frail, seated in a wheelchair — was rolled onto the stage, greeted by a standing ovation before he even sang a note.

Then, as the first chords of “Sweet Caroline” echoed, the audience gasped once more. From the opposite side of the stage appeared Céline Dion, radiant yet reverent, walking slowly toward Diamond. She took his hand, bowed her head briefly toward the Royal Family, and together they began one of the most unexpected — and unforgettable — duets in living memory.

Diamond’s voice, aged and cracked with emotion, carried the weight of history. Dion’s soaring soprano wrapped around his baritone like silk around stone, lifting each line into something transcendent. What had once been a stadium anthem suddenly became a hymn of remembrance, love, and unity.

The Royal Family sat in the front row, visibly moved. Prince William, lips pressed tight, placed a hand on his chest as if steadying himself. Prince Harry’s eyes glistened as a faint smile broke through, perhaps recalling Diana’s laughter and love of music. Even King Charles, usually reserved, tapped lightly along to the rhythm when the chorus arrived.

And then it happened — the hall itself seemed to breathe as one. When the chorus rang out, “Sweet Caroline!… bum bum bum…” thousands of voices thundered back, turning the duet into a collective anthem. For a moment, sorrow gave way to joy; grief melted into triumph.

The Royal Family rose to their feet as the final refrain soared, with Dion’s voice lifting Diamond’s in a climactic burst of sound that seemed to shake the very rafters. Applause and tears mingled in equal measure. Diamond, frail yet smiling, raised his hand weakly as if to say: This one was for her. Céline pressed her hand over her heart, then glanced upward — a gesture that needed no words.

Insiders later whispered that Diamond had nearly canceled due to his declining health, but insisted on performing, reportedly telling organizers: “Diana deserves joy, not sorrow. And Céline will help me give her that.”