[vil-uh-nel-uh; It. veel-lah-nel-lah] 
[-nel-ee; It. -nel-le] . | a rustic Italian part song without accompaniment. |
villanella
16th-century16th-century Italian rustic part-song, usually for three unaccompanied voices, having no set form other than the presence of a refrain. The villanella was most often written in chordal style with clear, simple rhythm. Traditional rules of composition were sometimes broken; for instance, the normally forbidden movement of voices in parallel fifths was common in the villanella. The villanella was not a folk form but a reaction against the more refined madrigal, often parodying well-known madrigal texts and music.
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