U+1D0C5 "𝃅" Byzantine Musical Symbol Fhtora Skliron Chroma Vasis Unicode Character

U+1D0C5 "𝃅" Byzantine Musical Symbol Fhtora Skliron Chroma Vasis is a specialized notation from the Byzantine musical tradition, representing a specific type of alteration or accidental used in the transcription of liturgical chant. This symbol, part of a larger system of neumes that indicate pitch and melodic movement, functions as a "fthora" or a sign of chromatic inflection, specifically modifying the scale by introducing the hard chromatic genus (skliron chroma) and serving as a foundational or "basis" note. It is employed in historical and modern editions of Byzantine music, particularly in the study and performance of Eastern Orthodox chant, to denote precise tuning and modal transitions that differ from standard Western equal temperament.