There are three ancient styles of singing in Lithuania connected with ethnographical regions: monophony, multi-voiced homophony, heterophony and polyphony. Monophony mostly occurs in southern (Dzūkija), southwest (Suvalkija) and eastern (Aukštaitija) parts of Lithuania. Multi-voiced homophony, widespread in entire Lithuania, is the most archaic in Samogitia. Traditional vocal music is held in high esteem on a world scale: Lithuanian song fests and sutartinės multipart songs are on the UNESCO's representative list of the Masterpieces of the Oral and Intangible Heritage of Humanity.