Los Campanilleros de Huevar

The villancico (or vilancete, in Portuguese) was a common poetic and musical form of the Iberian Peninsula and Latin America popular from the late fifteenth to eighteenth centuries.
With the decline in popularity of the villancicos in the 20th century, the term became reduced to mean merely "Christmas carol".
Important composers of villancicos were Juan del Encina, Pedro de Escobar, Francisco Guerrero, Gaspar Fernandes, and Juan Guttiérez de Padilla ..

Portuguese type
This type of poem has a mote - the beginning of the poem, which functions, when in music, as a refrain - followed by one or more intervening stanzas - the volta, copla or glosa - each one with 7 lines. The difference between the vilancete and the cantiga depends on the number of lines in the mote: if there are 2 or 3 it is a vilancete, if there are 4 or more it is a cantiga.
Each line of a vilancete is usually divided in five or seven metric syllables ("old measure"). When the last line of the mote is repeated at the end of each stanza, the vilancete is "perfect".