The group is based in the town of Cateura, which is - in essence - built on a landfill. Many people make their living by scrounging through the trash to find things they can sell and recycle. The town is plagued by crime and drugs, and more than 40% of the youth don't finish school because their parents need them to work. In this dereliction, the Landfill Harmonic is a hope-inspiring creative outlet for the kids who call Cateura home.
I could write a lot more, but really, the video says it so much better than I ever could. You'll be amazed by how beautiful scraps of tin and an old oil drum can sound. Have a look and a listen, and prepare to be mind-blowingly inspired.