In the year 2030, a powerful radio transmission originating from Earth will arrive at a potentially habitable exoplanet located approximately 12.4 light years away. Should any alien intelligence be there to receive it, they're in for quite a treat: This binary stream of data contains short musical clips from some of the world's best electronic musicians. It's part art, part science - but considering we know virtually nothing about extraterrestrials, should we really be calling attention to ourselves?