Ghost note

Musical note with a rhythmic value, but no discernible pitch

In music, notably in jazz, a ghost note is a musical note with a rhythmic value, but no discernible pitch when played. In musical notation, this is represented by an "X" for a note head instead of an oval, or parentheses around the note head. It should not be confused with the X-shaped notation that raises a note to a double sharp.

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