Mask dance is a stage play wherein one person or several people wearing a mask act as a person, an animal, or a supernatural being (god), delivering a message with dialogues or dances. Talchum (mask dance) was performed throughout the country until the early Joseon Period. When the Sandae (type of mask dance) was no longer performed in the Royal Palace, it was enjoyed as a pastime by ordinary people. Bongsan Talchum was started in Bongsan-gun, Hwanghae-do about 200 years ago. Performed on the night of Dano (fifth day of the fifth lunar month) and Haji (Summer Solstice), it is composed of dances associated with four monks, eight monks in black robe, a female member of a troupe, an old monk, a nobleman, and an old wife. Prior to the start of the play, the 36 members of the play (27 of them wearing masks) march to the site of the play while playing music. They also hold a sacrificial rite. The play contains satire about nobles harassing commoners, depraved monks, male chauvinism in a custom of allowing a man to take many wives, etc. Members dance to the tune of praying to Buddha, taryeong (Korean folk song), and gutgeori rhythm songs accompanied by the playing of samhyeon yukgak (three strings and six wind instruments) such as piri (flute), jeotdae (bamboo flute), haegeum (two-stringed fiddle), buk (drum), and janggo (hourglass-shaped drum). As the best known among the mask dances handed down in Hwanghae-do, Bongsan Talchum displays the lively movements of dancers including the shaking of the sleeves of the robes.