Percussion Notation - Anti-accents

Anti-accents

1. slightly softer than surrounding notes: ˘ (breve above or below—inverted—notehead)
2. significantly softer than surrounding notes: ( ) (note head in parentheses)
3. much softer than surrounding notes: (note head in brackets)

(Ghost note is a less formal alternative term which may refer either to anti-accentuation in general or to a particular degree of anti-accentuation. Ghost notes are often considered to be especially faint.)