Second Viennese School accidental duration rule

The accidental duration rule of the Second Viennese School states that an accidental applies only to the note on which it is written. All notes show an accidental regardless of key signature, including unaltered notes which show naturals.

This accidental duration rule was used by Schoenberg and other composers of the Second Viennese School.

You can customize the options within the Second Viennese School accidental duration rule when changing the accidental duration rule, including choosing whether immediate repetitions of the same note within the same bar require a restatement of the accidental.