Thank you, Gillymor. Ol' Frankie was a giant in terms of his voice. I agree he hit big time after Nelson Riddle. His days with the Hoboken Four back in the '30s were not his best, imo. Here's a clip I expect you've heard.

https://www.youtube.com/watch?v=4BM5O_elYnU

However, it's impossible to hear that and not smile. But when we listen to his later material it's much easier to see the talent and vocal control he had.