Use whatever song/music you want from any era.<br/><br/>I was under the impression that anything goes with the exception of technology, no fossil fuel engines or computers.  Electricity would be somewhere around the tesla stages of development, so very very basic electrical uses, nothing past a lightbulb technologically wise.  If I'm wrong please correct me - I was considering having Kissinger invent an amplifier based off of an old timey record player, with the big trumpet-speaker.