Unfortunately, we have no record of when Epigonus lived. Epigonus was also a skilled citharist and played with his bare hands without plectrum. Juba II, king of Mauretania, who reigned from 30 BC, said that Epigonus brought the instrument from Alexandria and played upon it with the fingers of both hands, not only using it as an accompaniment to the voice, but introducing chromatic passages, and a chorus of other stringed instruments, probably citharas, to accompany the voice. Strings of varying lengths require a frame like that of the harp, or of the Egyptian cithara which had one of the arms supporting the cross bar or zugon shorter than the other, or else strings stretched over harp-shaped bridges on a sound-board in the case of a psaltery. It was undoubtedly a kind of harp or psaltery, since in an instrument of so many strings some must have been of different lengths, for tension and thickness only could hardly have produced forty different sounds, or even twenty, supposing that they were arranged in pairs of unisons. The instrument, which Epigonus named after himself, had forty strings. The epigonion was invented, or at least introduced into Greece, by Epigonus of Ambracia, a Greek musician of Ambracia in Epirus, who was admitted to citizenship at Sicyon as a recognition of his great musical ability and of his having been the first to pluck the strings with his fingers, instead of using the plectrum.

The epigonion (Greek: ἐπιγόνιον) was an ancient stringed instrument mentioned in Athenaeus (183 AD), probably a psaltery ( ψαλτήριον).

Classic greek stringed instrument