(...) the Gypsies, in the eve of flamenco, were acting on the Spanish popular rhythms and songs which, still preserving this popular quality, evolved sensibly towards an "agitanamiento" ("gypsying") which will finally be evident. When this transition time was completed, that song, that rhythm that the Gypsies knew in Andalusia were already a different thing, they were flamenco. In the case of the polo, this did not happen until the beginning of the 19th century, if we are to accept the criteria from Molina and Mairena, and Butler.