Journey into the world of Argentina's most famous musical artist in Mercedes Sosa: The Voice of Latin America. Over a career that spanned 50 years, Sosa sold millions of records, performed thousands of concerts all over the world, and left behind an incredible legacy as an artist who went beyond the borders of music to become one of the most influential – and loved – personalities of the 20th century. This intimate documentary reveals Sosa's early life and her rise to worldwide stardom, and explores the impact she had on the musical and political heritage of Latin America... and the world.