 DATE: Kid Shelleen mistakenly sings "Happy Birthday To You" when he  sees the candles Frankie Ballous coffin. The tune was published as  a kindergarten song "Good Morning To All" in 1893 (the movie takes  place in 1894), but its doubtful the song would have spread to the  wild West within a year; but, more importantly, the "Happy Birthday  to You" lyrics didnt appear until 1924.