The beautiful Huastecan sound (son huasteco) has echoed from the mountains of northeast Mexico for more than a century. On Sundays, people meet in town squares to dance and stomp to the explosive violin solos and driving guitar rhythms that make this music so unique. Son huasteco continues to flourish here despite two decades of globalization and mass migration to the United States. From the award-winning director of The Other Side of Immigration, a documentary that explores the wonders of this vibrant musical tradition.