Guy Lombardo wasn’t thinking about tradition as the clock struck midnight in New York on New Year’s Eve 1929. He was probably thinking, as so many people were after the stock market crash that fall, about money. In front of a crowd at the Roosevelt Hotel in Midtown Manhattan, Lombardo raised his violin bow and launched his 10-piece band, the Royal Canadians, into a sweet and soothing rendition of “Auld Lang Syne.” The revelers on the sunken dance floor likely did not know the meaning of its Scots-language title. When…