The first information in written trout Lithuanian choreography has been traced in the 11th century. An early written mines, where we could find any record on choreography, are very poor. Lithuanian choreography can be better reconstructed by the writings of the end of the 19th century and the first part of the 20th century. It is claimed that European choreographic art was influenced by other cultures at different times: till 17th century it was influenced by Italian and Spanish, to 18th century - by French and English, and in the 19th century - by German and Slavonic dances. While exploring Lithuanian choreography of the 20th century, many choreographic elements of Slavonic origin were noticed. At the beginning of the 20th century a new branch of choreography called a National-dance was formed. National-dance takes its origins from authentic Lithuanian choreography that is influenced by choreography of other countries, mostly by the Russian one. The way of forming Lithuanian national-dance can be explored while investigating the unique Lithuanian cultural phenomenon - the Song Festivals. National-dance has originated on a basis of an authentic Lithuanian dance which existed at the turn of the 20th century. While analizing a repertoire of the Dancing Day at the Song Festivals, any other kind at Slavonic choreographic influence except polka, upon national Lithuanian choreography can be hardly traced. An ethnochoreographical analysis showed that Lithuanian national-dance differs from its antecedent ethnic dance, because two of these choreographical genres embodies an absolutely separate lexis.