Japanese song at 43, minute, 39 second of this video
https://youtu.be/fWdxhEPlL8s?feature=shared
(1986 documentary on Karel Gotha).
The song is sung by a woman.
Calm music, so 'Asian' to our ear, two girls dressed in pink, dancing. As it's the music that originally in the film flies on the TV, no Shazams catch it. And it is now haunting me and buzzing in my head :-)