"Valentine's Day", also known as "The Maid in the Moon" is an English country dance tune in 6/8 time and G Major. The tune dates to John Playford’s (1623-1687) 4th edition of his Dancing Master (1670), where it appears under the title "The Maid in the Moon" with "Valentine's Day" given as an alternate title. It was retained in the Dancing Master series through the 18th and final edition of 1728. However, beginning with the 6th edition of 1679 the primary title was "Valentine's Day" and in the 7th and 8th editions both "Valentine's Day" and "The Maid in the Moon" (using the same tune) were printed with different dance figures; "Maid" in a three-couple round dance, while "Valentine's" is a longways dance. The Valentine's Day customs had been discouraged by Commonwealth England, as were numerous folk and rural observances but found renewed vigor in Restoration times.
London publisher John Walsh picked up the tune and country dance for his Compleat Country Dancing Master, editions of 1718, 1731 and 1754. The dance “Valentine’s Day” is also recorded in the 1688 manuscript record of French Court dancing master André Lorin (now in the Bibliothèque Nationale in Paris), who visited England c. 1685 to collect English country dances in response to the growing interest stimulated by Madame la Dauphine. Later it was printed by Feuillet in 1700 in his treatise Choregraphie. Feuillet published subsequent editions of his work as the popularity of English country dancing took off on the Continent, several tunes were taken from The Dancing Master.
It was printed it Barlow's Complete Country Dances from Playford's Dancing Master (1985), Barnes's English Country Dance Tunes (1986) Christian's A Playford Assembly (2015) Walsh's Complete Country Dancing-Master, Volume the Fourth (1740).