In the 1920s, variations of “Happy Birthday,” set to the tune of “Good Morning to All,” appeared in several songbooks, including a 1924 one edited by Robert H. Coleman.

As the birthday song concluded in the latest viral clip, a voice was heard saying: "Aw, nice singing." A person sitting next to Turbo said "good job" as the dog was given a treat.

Besides being a birthday tune, the song -originally released on Wonder’s “Hotter Than July” album – also serves as a great honor to Dr. King, an inspiration to human rights activists ...