1.4 accidental

ES: alteración accidental, I: accidento, F: altération accidentelle, D: Vorzeichen, Versetzungszeichen, Akzidenz, NL: toevallig (verplaatsings)teken, DK: løst fortegn, S: tillfälligt förtecken, FI: tilapäinen etumerkki.

An accidental has the effect of an →alteration of a note. A sharp raises a tone by a →semitone, a double sharp raises it by a →whole tone, a flat lowers it by a semitone and a double flat lowers it by a whole tone. A natural cancels the effect of a previous accidental.