THE BUTTERFLY
(From "Step Lively 2"; Marion Rose calls it the Canadian National Dance).
3 dancers, arms linked.  No progression.
Music: Slow waltz alternating with fast something else.

Waltz part: Walk leisurely in time with the music, using step-swing or 
            step-hop-hop.

Other part:  Middle and one end right elbow swing, with other end left elbow
             swing, back and forth  until the music changes or your arms 
             fall off.

Band has to be prepared to mess with the dancers.