Each group is led by a kkwaenggwari ( RR - ggwaenggwari ) ( small handheld gong ) player , and includes at least one person playing janggu ( hourglass drum ) , buk ( barrel drum ) , and jing ( gong ) .
Each group is led by a kkwaenggwari ( small handheld gong ) player , and includes at least one person playing janggu ( hourglass drum ) , buk ( barrel drum ) , and jing ( gong ) .