There are two forms of undecorated used in Korean folk music: the used to accompany ', which has tacked heads, is called a (소리북),photo while the "buk" used to accompany "pungmul" music, which has laced heads, is called "pungmul-buk" (풍물북).photo The is played with both an open left hand and a stick made of birch that is held in the right hand, with the stick striking both the right drumhead and the wood of the drum's body. The "pungmul-buk" is one of the four instruments used in "samul nori", a modern performance version of "pungmul".[https://web.archive.org/web/20071213122029/http://www.culturebase.net/artist.php?1208] It is played by striking a single stick (usually with the right hand) on only one of its heads.