What is "laiko"

Laïkó (, , "song of the people"; "popular song", pl: laïká [tragoudia]), is a Greek music genre composed in Greek language in accordance with the tradition of the Greek people. Also called folk song or urban folk music (Gr: αστική λαϊκή μουσική or λαϊκά τραγούδια laïká tragoudia), in its plural form is a Greek music genre which has taken many forms over the years. Laïkó followed after the commercialization of rebetiko music. It was strong dominated by Greek folk music and is used to describe the whole of the Greek popular music. When used in context it refers mostly to the form it took in the period from the 1950s to the 1980s.