Johnson is said to have composed it based on a number of country and square dances he was doing while working at The Jungles Casino around 1913, he later published it in 1938.
2) Lift your right hand high over head, Elbows slightly bent, palms facing forward towards your partner.
3) Foot comes down, body straightens as left hand is raised overhead.
In 1965, Smirnoff Vodka hired Killer Joe Piro to create a new dance called the Mule for their new drink of the same name (vodka with a 7-Up mixer), and to release an album of music by Skitch Henderson that included a track with the same name (Skitch Plays The Mule, Mainstream Records - KP-326).
However, the track didn't include calls to help people dance the mule.