Many of the names involved might no longer be household ones, but as you can see from the album cover below, for the day 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.
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 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."