Tembang sunda, also called seni mamaos cianjuran, is a style of classical vocal music that originated in the Priangan highland of western Java.
Unlike Sundanese gamelan music, tembang sunda was developed in the court of the regent Kabupaten Cianjur during the Dutch colonial period (mid-nineteenth century).
The traditional vocal portion is sung free verse poetry, the instrumental accompaniment being performed on kacapi (zither), suling (bamboo flute) and sometimes, rebab (violin).
[1] Kacapi suling is played to ornament the vocals, and also at interludes between songs at a typical Tembang Sunda performance.
The change to laras sorog usually takes place at midnight and lasts til sunrise.