Harry Connick Jr. is one of my musical heroes. He is the consummate showman, a phenomenal composer and arranger, and one of the best piano players in the world. You throw in the fact that he can sing and act and he can make you depressed pretty quickly.
I just performed a fantastic arrangement of this chart by Bryan Kidd with the American Festival Pops Orchestra. I personally think more Christmas tunes should have a New Orleans street beat.