Baltic psaltery
Baltic psaltery is a family of related plucked box zithers, psalteries, historically found in the southeast vicinity of the Baltic Sea and played by the Baltic people, Baltic Finns, Volga Finns and northwestern Russians.

Types
Baltic psalteries include:

Kanklės (Lithuania)
Kantele (Finland, Karelia and Northwest Russia)
Kannel (Estonia)
Kāndla (Livonian people of Northwest Latvia)
Kokles (Latvia)
Krez (Udmurt people of Central Russia)
Krylovidnye gusli (Northwest Russia)
Kusle (Mari people of Central Russia)
Harpu (Sápmi)The internationally most known instrument of the family is Finnish kantele, so its name is sometimes used in English to also refer to other Baltic psalteries as well. Many of the Baltic psalteries hold a strong symbolic significance in their respective countries, including Finland, Latvia, Lithuania, Estonia and Russia, where playing instruction and instrument makers are available.

Etymology
According to Finnish linguist Eino Nieminen, the names kanklės, kantele, kannel, kāndla and kokles possibly come from the proto-Baltic form *kantlīs/*kantlēs, which originally meant 'the singing tree', ultimately deriving from the Proto-European root *qan- ('to sing, to sound'). However, Lithuanian ethnologist Romualdas Apanavičius believes they could be derived from the Proto-European root *gan(dh)-, meaning 'a vessel; a haft (of a sword)', suggesting that it may be related to the Russian word gusli.

The Baltic Psaltery Symposia
Since 1990 Baltic Psaltery Symposia have taken place in Finland (1990; 1997; 2008), Lithuania (1994; 2017), Latvia (2000), Canada (2004) and Estonia (2013) every three or four years on a rotating basis.

References
Bibliography
Muktupāvels, Valdis (2013). The Baltic Psaltery and Playing Traditions in Latvia (2nd ed.). Riga: Lauska. ISBN 978-9934-8276-2-4.

Further reading
Tëmkin, Ilya (January 2004). "Evolution of the Baltic psaltery: a case for phyloorganology". The Galpin Society Journal, Retrieved April 1, 2017.