Singer-songwriter Neil Diamond has the reputation of being a really nice, down-to-earth guy, and there have been many episodes in his career demonstrating that. He’s over 80 now, and years ago announced that his singing days were over because, like fellow retired singer Linda Ronstadt, he is suffering from Parkinson’s Disease, which makes controlling one’s vocal chords difficult. Nonetheless, when he has been feeling well and the occasion is right, Diamond has warbled, a bit wobbly, despite his malady, as when he sang briefly at the Keep Memory Alive Power of Love Gala at the MGM Grand Garden Arena in Las Vegas, where he was being honored, and last summer at Fenway Park, where “Sweet Caroline” is played during every Red Sox game as a crowd sing-along, when he made a surprise appearance and joined the crowd.

Over the weekend, the new Broadway jukebox musical “A Beautiful Noise” opened on Broadway. Diamond was guest of honor naturally, and, as you can see in the video, got up in his box and sang “Sweet Caroline” as the audience went nuts. Sure, Diamond was assured of a positive response no matter how he sounded. but he is in a distinct minority among famous performers, most of whom are sufficiently vain (or perfectionists) to refuse to perform, or in some cases, even appear in public, once their talents have decayed to a point they deem unacceptable. The rare ones like Diamond, however, are willing to be a shadow of their former selves to give an audience a thrill they will never forget.

And that’s what he did—a gift, to them, to Broadway, even to me.

Bravo.