Thailand's culture and art are very distinctive. Most of these cultures evolved from the palace culture, and their main purpose was to serve Buddhism. "Thai horror" has also successfully integrated these elements, especially in the soundtrack of the film, forming its own unique style. An excellent horror film can not only give the audience a visual impact, but also win in hearing. To some extent, the sound can sometimes create a more frightening atmosphere than the picture, which is why "Zhang zhen tells ghost stories" is so popular. The unique function of sound is essential for a good horror film. Classical music in Thailand is a unique 7-octave scale, which means that an 8-degree scale is divided into 7 equal parts and then composed of these 7 equal intervals. Therefore, when you listen to Thai classical music at first glance, you will have a strange feeling of rhythmic gyration. Classical music in Thailand is closely related to Buddhism. Classical music should be played in religious ceremonies, traditional ceremonies and programs. Therefore, the average temple will have its own band. In a band, the drummer is very important. In Thailand, if a band does not have a drummer, then the band will face the fate of dissolution. Ghost Drum is a film about classical music. The drummer in the band is vacant. Everyone wants to win this honor. The drummer who was once favored by everyone lost to the new generation, so he instigated others in the band to take refuge in other bands and betrayed his master. In the end, the souls hidden in the drum punished their betrayal with death. The plot of this film seems to be old-fashioned, but music is the highlight, especially when the two orchestras are fighting music, which is very shocking. At the same time, the unique musical style of the syncopated rhythm of Thai classical music combined with 7-average syllables adds a sense of mystery and strangeness to the film, making up for the rut in the plot, and fully embodying and displaying the "Thai horror" different from others.