Musical note
Two other modifiers are double sharps, which raise the note a whole step, and double flats, which lower the note a whole step. These are much less common that the simple sharp or flat, but can still be seen in some types of music. The symbol for a double sharp is × and the symbol for a double flat is ♭♭. For example, E♭♭ is another name for D. This is called an enharmonic equivalent. Another enharmonic equivalent is C and B♯.