Based on a texte or introductory stanza, the villancico
usually had about six strophes glossing the first. The strophes were usually about six lines, plus the chorus. The chorus was often the introductory stanza or
part thereof. Spanish poetry often uses either seven, eight, or eleven-syllable lines. The introductory stanza/chorus would be one nonce form, and the main
strophes would be another nonce form. Again, being Spanish, the forms used probably rhymed.
Liturgically, the villancico was often used for carols, especially in Neuvo Españna.