Thai Traditional

Traditional instruments - ranad ek (Thai xylophone), khong wong (gong circle), ching (small cymbals), sam sai fiddle are named. The rest of the ensemble matches the instrumentation of a piphat.
 "Thai musical instruments are simplicity themselves. Yet the more simple the instrument appears, the more subtle our techniques must be."

Traditional poetry, dance, theatre, instruments, music. Temple mural painting. Historic clothing. Arts aren't incidental to this or a bit of colour - they are intrinsic to the characters' lives.
Thai PBS.

Traditional music (flute, piphat ensemble)
Restored version avaiable on Film Archive Thailand's YT channel

Traditional dance, music, masks costumes.

Documentary looking at the highest form of Khon dance, Phra Pirap Nah Paht.

Traditional dance and theatre

Traditional dance & clothing

Traditional clothes, dance

Likay music, (possibly dance, theatre and clothes) - will update when I've seen it, or sooner if someone else watching while airing confirms- Elisheva

Traditional clothes and food, martial arts

Traditional food & clothing

Historic clothing, rituals

Historic clothing, traditional instrument - saw duang, spike fiddle

Traditional clothing, Small amount of traditional arts, etc.

Traditional food, primarily deserts

Thai food

Traditional Thai Food

Regional song - Likay is referenced, and some online say it's mor lam, but I think the music is what's called "Thai country." The songs are used very well in the film.

Traditional arts. Nang Talung shadow plays. (Southern Thailand, part of the Thun Thai compilation series)

Yan lipao weaving

Traditional Instrument (Thai Xylophone)

Traditional Thai Costumes

Traditional dance, costumes

Traditional instruments

Traditional clothes

Never Let Me Go Episodes: Traditional clothes