The origin of the "dance" quote was a question that was discussed
on the "Stumpers" mailing list in March of this year.  Songwriter
Richard Leigh responded that the lyrics originated with him.  For
his response, see the archived message at:

http://listserv.dom.edu/cgi-bin/wa.exe?A2=ind0403&L=STUMPERS-L&P=R17911

Barb