U+1D146 "𝅆" Musical Symbol Square Notehead White Unicode Character

U+1D146 "𝅆" Musical Symbol Square Notehead White is a specific glyph within the Unicode standard's Musical Symbols block, designed to represent a square-shaped, hollow notehead used in Western musical notation. Unlike the more common oval noteheads, this symbol is typically employed in early music contexts, particularly in mensural notation from the medieval and Renaissance periods, where it indicates a note of a specific rhythmic duration. Its white, or open, appearance signifies that it is an unblackened notehead, often corresponding to a long or breve value depending on the time signature and notational style of the piece. As part of the comprehensive musical encoding system, this character allows digital representation and typesetting of historical scores, preserving the distinct visual language of older musical manuscripts.