Theater chains like create custom video montages to accompany the anthem.
: It served as the de facto national anthem until 1932, after which it remained solely the royal anthem. SF Cinema City & Anthem Videos
The ( Sansoen Phra Barami ) is a deeply ingrained cultural tradition in Thailand, played before the start of every film at major theater chains like SF Cinema City . History and Origins
: The anthem has been played in Thai cinemas since 1935. Originally, it was performed live by traditional bands during silent films, but evolved into cinematic montages as technology advanced.