This song is oddly hard to track down. It seems like an old pop song, yet I have failed to find any web site that credits an author, or gives any specific information like a date of publication. There are a lot of variants out there. Some even change it to "Mister Sun." It is a popular kids' song, and often appears on lists of camp songs. One version appears on a Barney video. The Delta Delta Delta sorority has adapted it for their purposes. It is popular with barbershop quartets, and I have seen many ads for songbooks that include it, but no actual lyrics.

I hope someone out there finds it, but I'm giving up for now.