Back to alphabetical overview – click here
A double sharp (𝄪) is an accidental that raises a note by two semitones (one whole step). It is used to preserve correct musical spelling in scales, chords and harmonic progressions.
What is a double sharp?
A double sharp raises the written note by two semitones. For example, F double sharp (F𝄪) sounds the same as G in equal temperament, but the spelling is retained because the note functions as a modified form of F within the harmonic context.
Double sharps appear mainly in advanced music theory, classical scores and complex harmonic writing, where accurate note spelling is essential.
How is a double sharp used in piano playing?
Double sharps are uncommon in popular music but occasionally appear in advanced classical and jazz notation. When reading a double sharp, simply raise the written note by two semitones while remembering that the unusual spelling serves a theoretical purpose.
Understanding double sharps improves your ability to read complex scores and strengthens your knowledge of harmony, notation and key signatures.