Many of the names involved might no longer be household ones, but it was a respectable cast, with a couple of full-fledged opera stars in it (Patrice Munsel and Robert Weebe), as well as pop stars. And one Hollywood legend as Scrooge -- Basil Rathbone, best know for playing 'Sherlock Holmes' in the movies from 1936-1946.
The score by Fred Spielman and Janice Torre isn't especially memorable, but there are some nice things in it. And I like this one, as much for it being sung by Basil Rathbone, of all people, as for the song itself. He's no singer at all, but handles the number effectively.
I should also note that I like it when songs are written from famous lines in literature, as this is. This number comes from late in the show, after Scrooge has learned his lesson. It takes its title from a line from Dickens when Scrooge has told the Ghost of Jacob Marley that his former partner was always a good man of business, and the specter admonishes him. And so, here, Scrooge has learned that lesson. "Mankind Should Be My Business."