Blue Moon of Kentucky

"Blue Moon of Kentucky" is a waltz written in 1945 by bluegrass musician Bill Monroe and recorded by his band, the Blue Grass Boys. Some think the origins may trace back to "Roll Along, Kentucky Moon", a similar waltz recorded 20 years prior by Jimmie Rodgers. The song has since been recorded by many artists, including Elvis Presley, Paul McCartney. The song 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" number 11 in its list of 100 Greatest Songs in Country Music.