The Great Wall Youth Orchestra is located in Oakland and performs world music on traditional Chinese instruments. The Orchestra was formed to accommodate "graduates" of the Purple Bamboo Orchestra, and interested students from throughout the Bay Area are welcome to audition. Both orchestras were founded by Sherlyn Chew. Student members range from elementary to high school age and play pieces that reflect their high level of skill in playing their chosen Chinese musical instruments. The orchestra rehearses on Saturdays under tutelage of musicians, who are expert in the various instruments, and plays at many concerts throughout the year. Some of the music played by the Orchestra was arranged by the late Mr. Pei Kun Xi.