It could be a tense orchestral crash of instruments (“Thus Sprach Zarathustra”), or held in just a few feverish notes on a piano (“Halloween”). Whatever it is, the music from movies we think of as spooky plays a big part in raising those hairs on our neck and getting us to reach out for a (hopefully live) hand to hold. John Schaefer, host of New York Public Radio’s “Soundcheck” joins us with a playlist of some of the scariest music ever recorded. Check out The Takeaway’s Halloween playlist on Tumblr.