Adrian Freed

"Classical huapango is characterized by a complex rhythmic structure mixing duple and triple meters
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