How do songs get embellished (for lack of a better word) like this and how do we all come to know them? I’m not talking about legitimate spoofs like Weird Al’s stuff. Just the ones that seem to happen in an organic fashion and take on a life of their own. I can only think of three off the top of my head: Jingle Bells, Happy Birthday to You, and Rudolph the Red-Nosed Reindeer…are there more?