Musique - High Society Calypso by Louis Armstrong
Well, I might be biased, given that Grace Kelly is my favorite actress of all time, but I do believe High Society trumps The Philadelphia Story. I am usually more of a fan of originals than remakes, but in this case, it's definitely the opposite.
Now You Has Jazz number is a little painful—it's like watching your dad try to be cool or something. However, Bing and Grace having once been in love in real life, their chemistry is totally believable. It wasn't until the end of The Philadelphia Story that I started to pick up on any chemistry between Hepburn's Tracy and Grant's Dexter.