One of the country's most significant cultural contributions is the tango, which originated in Buenos Aires and its surrounding areas during the end of the 19th century.[2] Folk music was popular during the mid-20th century, experiencing a revival in popularity during the 1950s and 1960s with the rise of the Nuevo cancionero movement.[3] The mid-to-late 1960s also saw the rise of Argentine rock (known locally as rock nacional), which is considered one of the earliest incarnations of Spanish-language rock to have an autochthonous identity that prioritized original compositions in Spanish.[citation needed] Rock nacional was widely embraced by the youth and has become an important part of the country's musical identity.