The centre of the spiral defines the line or space upon which it rests as the pitch G above middle C, or approximately 392 Hz.
Positioned here, it assigns G above middle C to the second line from the bottom of the staff, and is referred to as the "treble clef." This is the most commonly encountered clef in modern notation, and is used for most modern vocal music. Middle-C is the 1st ledger line below the stave here. The shape of the clef comes from a stylized upper-case-G.
Category: Musical Symbols.
More symbols in Clefs:
A clef (French: clef; “key”) is a musical symbol used to indicate the pitch of written notes. Placed on one of the lines at the beginning of the stave, it indicates the name and pitch of the notes o… read more »
More symbols in Musical Symbols:
Modern musical symbols are the marks and symbols that are widely used in western musical scores, styles, and instruments today. This is intended to be a comprehensive guide to the various symbols enc… read more »