Daina is the traditional name of vocal folk music in the Baltic languages, and is preserved in Lithuania and Latvia. Lithuanian dainos (literally, "songs") are often noted not only for their mythological content, but also for relating historical events.
Most Lithuanian folk music is based around various types of dainos, which include romantic songs, wedding songs, as well as work songs, and archaic war songs. These dainos are performed either solo, or in groups, and in parallel chords or unison. 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 is widespread in the entire Lithuania; it is most archaic in the western part (Samogitia). Polyphonic songs are common in the renowned sutartinės tradition of Aukštaitija, occurring only sporadically in other regions. A large number of Lithuanian dainos are performed in the minor key.
Parts of Igor Stravinsky's The Rite of Spring are based on Lithuanian dainos, as are works by Lithuanian composer Juozas Naujalis.
Cf. Celtic Gaelic duan 'song'; Romanian doină, daină 'folk song, often with a sad music or contents'.
Lithuania is home to many folk music festivals. The Dainų šventė (literally "Song Festival") a state-supported festival is perhaps the most famous; it was first held in 1924, and has continued every five years since, helping to keep folk traditions alive. Other major folk festivals include the Skamba skamba kankliai and the Atataria trimitai, both held annually; of historical importance is the Ant marių krantelio, which was held in the 1980s and was the first major festival of its kind. The Baltica International Folklore Festival is held in one of the Baltic states every year.