Question: It was this day in Rock History in 1973, this record setting album went to #1 in the US and would stay there for over 14 years! What was it?

Answer: It was Pink Floyd’s Dark Side of the Moon. After spending 741 discontinuous weeks on the Billboard chart it would move to the Billboard Top Pop Catalog Chart, then notching up a further 759 weeks there, and had reached a total of over 1,500 weeks on the combined charts by May 2006 and has now sold over 45 million copies world-wide.