"Classical huapango is characterized by a complex rhythmic structure mixing duple [1] and triple meters [2]
which reflect the intricate steps of the dance . When the players sing ( in duo , on a falsetto tone )
the violin stops, and the zapateo ( heels rolling on the floor ) softens.
The huapango is danced by men and women as couples; the men sing, the women do not.
A very popular huapango is El querreque in which two singers alternate pert and funny repartees"
-Wikipedia
Links:
[1] http://en.wikipedia.org/wiki/Duple
[2] http://en.wikipedia.org/wiki/Triple_meter
[3] http://www.adrianfreed.com/category/affinity-group/guitar