thumb|Heptachord based on D, modal pattern: 1½11½1, 2 consecutive tetrachords thumb|Heptachord lyre Heptachord, from Greek heptachordos, from ancient greek ἑπτάχορδος (heptákhordos, "seven-stringed"), from ἑπτά (heptá, "seven") + χορδή (khordḗ, "chord"), is a 7-stringed lyre of ancient Greece, the interval of a seventh, or a (diatonic) scale of seven notes or tones.
thumb|Heptachord based on D, modal pattern: 1½11½1, 2 consecutive tetrachords thumb|Heptachord lyre Heptachord, from Greek heptachordos, from ancient greek ἑπτάχορδος (heptákhordos, "seven-stringed"), from ἑπτά (heptá, "seven") + χορδή (khordḗ, "chord"), is a 7-stringed lyre of ancient Greece, the interval of a seventh, or a (diatonic) scale of seven notes or tones.
==7-stringed lyre== Most of the ancient greek lyres had 7 strings. Early lyres originate in ancient Mesopotamia.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).