Radio broadcasts leave Earth at the speed of light. That’s an awful lot of music we’re spreading throughout the galaxy, and we feel sorry for anyone who has to listen to some of the crap that’s out there today. Good news is that the alien dudes are probably receiving music from around 100 years ago and still have the 70s and 80s to come. Scroll away from Earth and hear how far the biggest hits of the past have travelled. The further away you get from Earth, the older the music you will hear.