by Claire O'Neill

This video is neat. It was made by an organization called Playing for Change, a "multimedia movement created to inspire, connect and bring peace to the world through music." The song begins with one Roger Ridley in Santa Monica, Calif. Producers then bring the headphones to Grandpa Elliott, a blind singer in New Orleans. From there, they travel the world, recording musicians and layering the sound into one musical mosaic.

How does it work? Watch: