I think that when talking about how we communicate these things, I'm kinda with Isobel.
It is sort of an extension of using English, stuff like that. At some level, you have to make the connections that allow other players to relate to what you are talking about. Since with few exceptions, it takes something from CCP to create anything accepted widely enough that you might use it, you use something that is a good stand it. There are, also, as someone observed, only so many methods to make music.
I think that it is quite possible that music, of some type, speaks to humans on a nearly biological level. I don't know that there wouldn't be sorts of music that would be somewhat recognizable in the Eve universe (along with some, no doubt, that weren't).
The other option, making something up, works in some situations, but not others. Somewhere where you can have exposition, and aren't imposing an idea on other people's characters, mostly.