Point taken Gen, very subtle. Particularly the first clip (lots of reasons).
I was coming at it more from the point of view of the relationship music has with math, and from there the probable recognition of that by some alien entity. I suggest Mozart in particular for that reason, as from what I understand, his music often contained what one might refer to as musical jokes, or conundrums that someone with the requisite knowledge and skill would recognize as mathematical games, if you will.
That's not to say that other forms of music contain any less vibrant a picture of what the performer is trying to get across. It just seems to me that the western european classical form might be the easiest form to interpret. Who knows?
All of this is coming from someone who dosen't actually listen to much
classical music, though I do like some.
Rock and Roll, that's what does it for me and a myriad of other styles, and long live it all.
Music is one of mankinds greatest gifts. It is hugely important to me, and
the best shortcut I know to another mans soul, and maybe, just maybe another "Soul" Man. 
Thanks for starting this thread methshin, got a riff out of of it.
Cheers. 
Mark
