"Blue Moon of Kentucky" is a waltz written in 1946 by bluegrass musician Bill Monroe and recorded by his band, The Blue Grass Boys. The song has since been recorded by many artists, including Elvis Presley and The Cockroaches. "Blue Moon" is the official bluegrass song of Kentucky. In 2002, Monroe's version was one of 50 recordings chosen that year by the Library of Congress to be added to the National Recording Registry. In 2003, CMT ranked "Blue Moon" #11 on its 100 Greatest Songs in Country Music.