Accidental duration rules

Accidental duration rules determine how long accidentals apply, such as within a bar, at a different octave, or just for a single note. Dorico Elements uses the common practice accidental duration rule.

Common practice

In common practice, an accidental affects all notes of the same pitch in the same octave within the same bar, unless it is cancelled by another accidental. If it is not cancelled, it is automatically cancelled in the following bar.

It is customary to show cautionary accidentals on subsequent notes in certain circumstances. For example, in the key of G major, an F in a bar following an F shows a cautionary sharp sign, even though the sharp is included in the key signature. Cautionary accidentals are also known as “courtesy accidentals”.