Gentle pre-1975 Vietnamese ballad vibe; male vocals; lilting 3/4 waltz with warm nylon-string guitar, subtle bossa-inflected chords, soft upright bass; brushed snare and delicate ride cymbal; intro verse almost whispered, chorus blooms with string ensemble swells and light woodwinds; overall tender, nostalgic arc that stays intimate, spotlight on lyrical phrasing and rubato