sentences:  The "Šaraknoc"' is the book which contains the "Šarakan", or "Šaragan" (Canons), hymns which constitute the substance of the musical system of Armenian liturgical chant in the eight modes.Originally, these were Psalms and Biblical Canticles that were chanted during the services.A "Sharagan" was composed of verses which were interspersed between the scriptural verses.