Rebetiko , occasionally transliterated as rembetiko or rebetico, is a term used today to designate originally disparate kinds of urban Greek music which in the 1930s went through a process of musical syncretism and developed into a more distinctive musical genre. Rebetiko briefly can be described as the urban popular song of the Greeks, especially the poorest, from the late 19th century to the 1950s, and served as the basis for further developments in popular Greek music. In 2017 rebetiko was added in the UNESCO Intangible Cultur