It is the title of a famous bolero written by Tony Fergo (pseudonym of Antonio Fernández Gómez). It seems that 'lunera' is a word created only to make a rhyme, but it is possible that the author took a zaragocí expression for the "view of the moon from the locality of Luna", where it is used as a demonym to lunero. The phrase is also part of other poems, songs and even the title of a book.
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