mus-ethnicity

Could someone who has a vast music library and programming skills please create a website that explores different ethnicities through their music? Imagine it - like Pandora, but rather than plugging in a band/song, you would plug in an ethnicity or country name that you would like to experience. I would call it MusEthnicity.
For example, if I plugged in Slovac, DeVotchka might play. Or Mexican, Grupo Fantasma might pop-up.
If this exists and I just haven't stumbled upon it, please send it along!