Ada Ríos grew up in Cateura, a small town in Paraguay built on a landfill. She dreamed of playing the violin, but with little money for anything but the bare essentials, it was never an option...until a music teacher named Favio Chávez arrived. He wanted to give the children of Cateura something special, so he made them instruments out of materials found in the trash. It was a crazy idea, but one that would leave Ada—and her town—forever changed.