Abstract
”Folklore literature” is another name of ”oral folklore”, sometimes it is called ”oral literature”. Originally it comes from the English word ”folklore”. The ”folklore” and ”literature” is different. If the literature's nature is from writing, folklore is from orality. This study is specially on the research of orality of folklore. The most important genres of folklore are folk song/ballad and folk narratives (including myth, legend, folktale).Orality means the action of talking, telling, for audience, is to listen. Listening is very different from reading, it has the problem of memory. Oral literature, from ballad, folk song to folktale, all have the influence of orality/memory problem. The repetition, tripling, and formulaic expression are the nature of folklore. This research has given a good explanation for most problems of the orality of folklore.