Heart (ดวงใจ) is the theme song of the film, 'Operation Bangkok' released in 5th April 1966. The song refered to true love of levers who are different nationalities, different languages and live in different countries.
Melody was composed by Snga Arampee.
Lyrics was composed by Snga Arampee.
The song was first recorded by Svalee Pagapan.
If you build your family tree and connect it to your relatives' family trees like fitting pieces of jigsaw together,
you will get a perfect big family tree which you and your relatives can share to get to know one another although they live in different cities or different countries
because the family tree explains clearly who is who.