Monrak luk thung (1970)
Monrak luk thung (, or Magical Love in the Countryside or Wonder of Luk Thung) is a 1970 musical-comedy-romance film directed by Rungsri Tassanapuk and starring Mitr Chaibancha and Petchara Chaowarat. Released on May 15, 1970, the film was an enormous hit, playing in Thai cinemas for six months.
More at Wikipedia.