Well, now that you bring this up Rob....
I don't like to share this bit o' information with too many people, BUT back in the day in BigBill's stompin' grounds at the old Desert Inn, I taught those "Rat Packers" EVERYTHING they KNEW!
Cheers,
Dwight
(YEP! Frank, Sammy, Dean, Peter, Joey...they ALL were TRANSFIXED whenever I grabbed that microphone up there on that stage, kid)