This is the first comprehensive U.S. film to explore the origins and growth of traditional Puerto Rican music. Interviews with musicians living in New York reveal how traditional music is used as a source of resistance against cultural domination. Their music is also a means by which Puerto Rican culture is maintained and transformed. The film focuses on the music of "Lexington Avenue Express", a group that has taken their music to community centers, political events, prisons and music festivals.