HandwovenConsensusWhat's a piece of classical music that everyone knows but most people don't know they know?
Also Sprach Zarathustra. (Thus Spake Zarathustra) very overused, but one of the greatest pieces of music in all of history.
agent_flounderFeatures heavily in the beginning of 2001: A Space Odyssey.
That movie has some other greats like Blue Danube Waltz by Strauss.