Published at Friday, 29 December 2017 by Whitney York in Happy Bitrthday, with total 20 digitals.
In this same year the song was published in the songbook Song Stories for the Kindergarten. The song proved to be very popular and underwent some small changes to lyrics over time, though always based upon a greeting song for either teachers to students, or changed from students to teachers.
Lets go back to the origins though...
The happy birthday song story, a lot more to it than you may have thought.