A Song for Diana’s Memory — Long after the chandeliers dimmed at Royal Albert Hall, Neil Diamond was rolled onto the stage in his wheelchair. Beside him, Céline Dion gently placed a hand on his shoulder, joining him in a soaring “Sweet Caroline” — this time, not for stadiums, but for Diana. On the anniversary of the Princess’s passing, the familiar anthem turned into a hymn of remembrance. Prince William pressed a hand to his chest, his eyes glassy; Kate was seen clutching his hand, a tear slipp