Our musical world is transmitted mostly by electricity. If you use headphones, then you're using electricity to vibrate little magnets to copy the sounds that your favorite rock band made in the recording studio. If you're using speakers, then you have somewhat larger magnets in a rectangular case, again vibrated by electricity. Also, the bodies of us and other animals use electricity to transmit signals from our brain to tell our body how to behave. A biologist realized that a squid's elaborate color-changing skin is controlled by the squid's brain, electrically. Having a dead squid handy, he hooked it up to a handy iPod to make probably the strangest automated music visualization ever:
Yes, that's seriously the squid's skin's response to the electrical signals made to play the biologist's favorite rap song.
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