Katha (storytelling format)
Katha (or Kathya) is an Indian style of religious storytelling, performances of which are a ritual event in Hinduism. It often involves priest-narrators (kathavachak or vyas) who recite stories from Hindu religious texts, such as the Puranas, the Ramayana or Bhagavata Purana, followed by a commentary (Pravachan).
Source: Wikipedia — Katha (storytelling format) (CC BY-SA 4.0)