def _create_alteration_element(self):
accid = mod.accid_()
accid.id = self._idgen()
if self.glyph['form'] is "sharp":
accid.attributes = {"accid": "s"}
elif self.glyph['form'] is "flat":
accid.attributes = {"accid": "f"}
zone = self._create_zone_element()
note.facs = zone.id
return accid
