In Taiwanese Opera, the music accompaniment is called, Wen-Wu Chang（Civil & Martial Stage）or Hou Chang（rear stage）. The accompaniment plays an indispensable role in for the performance of Taiwanese Opera. There is a jargon in traditional drama, “A successful performance requires thirty percent from the front stage, and seventy percent from the rear stage.” This jargon clearly indicates the importance of the accompaniment.
There are usually five musicians to construct Wen-Wu Chang. They are divided into two groups, Wen Chang and Wu Chang. Wen Chang sits on the right side of the stage, while Wu Chang sits on the left.

Wen Chang（Civil Stage）:
Wen Chang is made up of musicians who play stringed instrument and wind instrument. It helps enhance dramatic atmosphere as well as create special sound effects.
Major stringed instrument applied in wen chang are: souna horn, bamboo flute, vertical bamboo flute, ya mou flute（a special type of woodwind）, erhu fiddle, ke zai sian（a shell-shaped stringed instrument）, da guang sian（a large, two-stringed Chinese mandolin）, san sian（a three-stringed plucked instrument）, and hexagon-shaped Chinese mandolin.

Wu Chang（Martial Stage）:
Wu Chang is made up of musicians who play percussion instrument. It cooperates with actors stagecraft and help build up dramatic atmosphere to control the tempo of the drama.
Instruments played by wu chang are all percussion instruments, however, percussion instruments dominates the whole play. Without wu chang, traditional opera would lose its unique flavor.
Major stringed instrument applied in wu chang are: bass drum, mini gong, hardwood clapper, ban drum（a small drum for marking time）, tang drum, bang zih（a rectangular, hollow wooden block percussion instrument）, peng bell, ching（a inverted bell）, small gong, big gong, and chau.