And i agree with Captain Nighthawk, the songs should reflect off of the map you are making/changing... i know some good Russian songs... if you ask me, Foreign music is awesome!!! Glukoza is awsome but nor an english band and really popular over in russia... Check these out
Глюк'oZa /Gluk'oZa/ - Ой-Ой /Oi-Oi/ (<----- one song...);
Глюк'oZa /Gluk'oZa/ - Невеста /Nevesta/ (also one song);
Глюк'oZa /Gluk'oZa/ - Ненавижу /Nenavizhu/ (you get the point) (i think a good creepy song for a hidden radio to creap people out)