Don Quixote (14) - Finale Richard Strauss
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The 13 weirdest musical instruments ever
Otherwise known as the fire organ or the explosion organ (seriously), the Pyrophone Organ is powered by combustion. Which means that, to play it, a certain part of it needs to be on fire. Of course, it's all perfectly safe - the organ itself can be powered by propane and gasoline, and the explosions that force exhaust down the pipes to make the sounds can be regulated. But still, it's an explosion organ. Best stand back.