Ketoprak is a theatrical genre of Java featuring actors who may also sing to the accompaniment of the gamelan. It draws its stories from Javanese history and romances and in this differs from wayang wong, which shares with wayang kulit a repertoire drawn from the Hindu epics Mahabharata and Ramayana, as well as from ludruk which uses contemporary settings and the three-walled srimulat, which specializes in vampire stories. According to Clifford Geertz it was invented as recently as 1923.