Every five years, 30,000 people gather on the same stage in the small country of Estonia to join voices at Laulupidu, the National Song Festival, to become the largest choir in the world. Explore the beauty and meaning of the choral festival through the eyes of the young members of the San Francisco-based Piedmont East Bay Children’s Choir, one of the few American choirs invited to participate, as they discover the unique role that music has played for Estonians for over 150 years, as an integral force in maintaining strength and identity for a people who have faced cultural genocide more than once.