Here's the basic melody for Santa Claus is Coming to Town for flatpicking guitar. This arrangement will give you a great foundation to move forward with for learning the advanced solo.
This arrangement of Santa Claus is Coming to Town features more chromatic runs in between phrases and is really fun once you get it down.
This song is commonly known as a jazz standard which means you can play some fancy chords over it if you choose. This guitar tab will show you how to play some swing chords over Santa Claus is Coming to Town.