"Santa Claus Is Comin' to Town" is a popular Christmas song that tells the story of Santa Claus, a jolly figure who brings gifts to children around the world. The song emphasizes that children should be good, as Santa keeps a list of who is naughty or nice. The song was written by J. Fred Coots and Haven Gillespie in 1934 and has since become a holiday classic. It has been featured in various films and television specials, including the famous 1970 stop-motion animated special produced by Rankin/Bass.