| http://www.w3.org/ns/prov#value | - One in every 20 people under the age of 50 in the United States owns a copy of this album Dark Side remained on Billboard's 200 album chart for an amazing 15 years straight and then for another two when it was remastered back in 1994 It is currently the most successful album ever with upwards of 40 million copies sold world-wide.*THIS IS PROGRRESIVE ROCK*Once in a while, a rock band or other music
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