"The cithara or kithara (Greek: κιθάρα, romanized: kithāra, Latin: cithara) was an ancient Greek musical instrument in the yoke lutes family. In modern Greek the word kithara ...
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has come to mean "guitar", a word which etymologically stems from kithara.
The kithara was a seven-stringed professional version of the four-stringed lyre, which was regarded as a rustic, or folk instrument. As opposed to the simpler lyre, the kithara was primarily used by professional musicians, called kitharodes. The kithara´s origins are likely Anatolian.(p185) The barbiton was a bass version of the kithara popular in the eastern Aegean and ancient Anatolia." - (en.wikipedia.org 06.08.2020)