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Note: New users are sometimes confused about accidentals and
key signatures. In LilyPond, note names are the raw input; key
signatures and clefs determine how this raw input is displayed.
An unaltered note like c means ‘C natural’,
regardless of the key signature or clef. For more information,
see Accidentals and key signatures.
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A sharp pitch is made by adding is to the note
name, and a flat pitch by adding es. As you
might expect, a double sharp or double flat
is made by adding isis or eses. This syntax is
derived from Dutch note naming conventions. To use other names
for accidentals, see Note names in other languages.
ais1 aes aisis aeses
A natural will cancel the effect of an accidental or key signature. However, naturals are not encoded into the note name syntax with a suffix; a natural pitch is shown as a simple note name:
a4 aes a2
Quarter tones may be added; the following is a series of Cs with increasing pitches:
ceseh1 ces ceh c cih cis cisih
Normally accidentals are printed automatically, but you may also
print them manually. A reminder accidental can be forced by
adding an exclamation mark ! after the pitch. A
cautionary accidental (i.e., an accidental within parentheses) can
be obtained by adding the question mark ? after the
pitch. These extra accidentals can also be used to produce
natural signs.
cis cis cis! cis? c c c! c?
Accidentals on tied notes are only printed at the beginning of a new system:
cis1 ~ cis ~
\break
cis
Preventing extra naturals from being automatically added
In accordance with standard typesetting rules, a natural sign is
printed before a sharp or flat if a previous accidental on the same
note needs to be canceled. To change this behavior, set the
extraNatural property to "false" in the Staff context.
\relative c'' {
aeses4 aes ais a
\set Staff.extraNatural = ##f
aeses4 aes ais a
}
Music Glossary: sharp, flat, double sharp, double flat, Pitch names, quarter tone.
Learning Manual: Accidentals and key signatures.
Notation Reference: Automatic accidentals, Annotational accidentals, Note names in other languages.
Snippets: Pitches.
Internals Reference: Accidental_engraver, Accidental, AccidentalCautionary, accidental-interface.
There are no generally accepted standards for denoting quarter-tone accidentals, so LilyPond's symbol does not conform to any standard.
This page is for LilyPond-2.11.58 (development-branch).
Report errors to http://post.gmane.org/post.php?group=gmane.comp.gnu.lilypond.bugs.
Your suggestions for the documentation are welcome.