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"Take psychedelic rock, add a fantastic theme and wild production, and throw in a pinch of symphony, and you&amp;#039;ve got yourself a progressive rock song! Take our quiz to see how much you know about the most iconic artists and music in the genre."^^<http://www.w3.org/2001/XMLSchema#string>
<http://entertainment.howstuffworks.com/progressive-rock-quiz7.htm>