Isan has regional styles, but these are styles of performance rather than separate genres. The most important of the styles were Khon Kaen and Ubon, each taking their cue from the dominant form of "lam gon" in their area: the "lam jotgae" of Khon Kaen, with its role of displaying and passing on knowledge in various fields, led to a choppy, recitative-style delivery, while the love stories of Ubon promoted a slower and more fluent style. In the latter half of the 20th century the Ubon style came to dominate; the adaptation of Khon Kaen material to imitate the Ubon style was sometimes called the Chaiyaphum style.