Developers of Lightyear.fm have built some kind of a cosmic wayback machine for the music.
We know that the speed of propagation in vacuum is the same as the speed of light, about 186 000 miles per second (about 300 000 kmph). So you shouldn’t be surprised if some aliens on a halfway to Proxima Centauri have listened “Gangnam Style” a moment ago for the first time. If they are living somewhere in 30 light years from us than the most fresh song they can hear is “Stripped” by Depeche Mode.
Lightyear.fm collected the most popular tracks. Then it allows you to make a journey through space, and while you’ll fly further and further you hear the more old music.
Bad Blood by Taylor Swift – near the Earth orbit. Sugar by Maroon 5 – near Jupiter. Shut up and Dance by Walk the Moon – near Saturn. The most fresh hit in 10 light years from Earth is Gold Digger by Kanye West and in 20 l.y. – Creep by TLC.
Here is the link to Lightyear.fm.
Unfortunately, aliens will unlikely listen our music. The signal will be blurred due to cosmic rays on a distance of several light years.