|Music by Country
Simply put, "musica folklorica" describes an entire range of music including andean, vallenato, joropo, pacific and atlantic coast, cumbia and more. When we think in terms of folk music from the United States for example, there is traditional folk, folk-rock, country-folk, cajun and zydeco from the south, Apalacian etc., and in South America there are the same kind of sub-groups for folk or folklorico music.
From Wikipedia we find a more detailed explanation:
"Music scholars, journalists, audiences, record industry individuals, politicians, nationalists and demagogues may often have occasion to address which fields of folk music are distinct traditions based along racial, geographic, linguistic, religious, tribal or ethnic lines, and all such peoples will likely use different criteria to decide what constitutes a 'folk music tradition.' This list uses the same general categories used by mainstream, primarily English-language, scholarly sources,as determined by relevant statements of fact and the internal structure of works. These traditions may coincide entirely, partially or not at all with geographic, political, linguistic or cultural boundaries. Very few, if any, music scholars would claim that there are any folk music traditions that can be considered specific to a distinct group of people and with characteristics undiluted by contact with the music of other peoples; thus, the folk music traditions described herein overlap in varying degrees with each other."