Kokle (; ) or historically kokles (kūkles) is a Latvian plucked string instrument (chordophone) belonging to the Baltic box zither family known as the Baltic psaltery along with Lithuanian kanklės, Estonian kannel, Finnish kantele, and Russian krylovidnye gusli. The first possible kokles related archaeological findings in the territory of modern Latvia are from the 13th century, while the first reliable written information about kokles playing comes from the beginning of the 17th century. The first known kokles tune was notated in 1891, but the first kokles recordings into gramophone records and movies were made in 1930s. Both kokles and kokles playing are included in the Latvian Culture Canon. Etymology According to Finnish linguist Eino Nieminen, the name of the instrument, along with the names of most of its neighbouring counterparts (Lithuanian kanklės, Finnish kantele, Estonian kannel and Livonian kāndla), possibly comes 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 kokles 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. Construction The kokles has a hollow trapezoidal body (ķermenis or korpuss) usually carved out of a single piece of wood (vienkocis) that's topped with a thin ornated wooden soundboard (skaņgaldiņš). A distinct feature that sets kokles apart from most of the other string instruments is that the strings don't rest on a bridge, making the sound quieter, but richer in timbre. Wooden (or sometimes metal) tuning pegs (tapas) are set into the wide tip of the body, while at the narrow tip is a metal rod (stīgturis) upon which the strings are secured, giving them a slightly fan-shaped arrangement. The strings may be of brass or steel. Traditionally, there were 6–9 strings which later increased to 10 and more. Playing The technique of kokles playing differs from most other plucked string instruments, including that of zither, harp and guitar. There are also some playing differences between the regional types of Latgale and Kurzeme instruments. In Kurzeme kokles was generally played while sitting on a stool, bench or chair without armrests and placing it horizontally in the lap with legs slightly parted. It could be played while laid down on the table as well. For Latgale kokles the size and form of the instrument