March the 1st is an historic day for music as it was the release date of one of the most iconic albums ever. Pink Floyd's "Dark Side Of The Moon". It spent 962 weeks on the U.S. Billboard's top LPs and Tape charts and went on to sell 45 million copies. It also was selected for preservation in the United States National Recording Registry by the Library Of Congress for being deemed "culturally, historically, or aesthetically significant".