Originally a song composed by Potenciano Gregorio in May, 1910. This ballad inspired many others in other forms, aside from music and a modern ethnocentric fusion version was made in 2001, if memory serves me internally. (?) The subject of Gregorio's composision was an overnight tryst, which became the inspiration for it in form of a poem, then a song, then a painting, and perhaps universally expressed and practiced by artists. Hehe! Naughty boys! ;) It was an Epiphany - he awoke next to the woman of his dreams.