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1.1.3 Displaying pitches
This section discusses how to alter the output of pitches.
Clef | ||
Key signature | ||
Ottava brackets | ||
Instrument transpositions | ||
Automatic accidentals | ||
Ambitus |
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Clef
The clef may be altered. Middle C is shown in every example. The following clef names can (but do not need to) be enclosed in quotes.
\clef treble c2 c \clef alto c2 c \clef tenor c2 c \clef bass c2 c
Other clefs include:
\clef french c2 c \clef soprano c2 c \clef mezzosoprano c2 c \clef baritone c2 c \break \clef varbaritone c2 c \clef subbass c2 c \clef percussion c2 c \break \clef G % synonym for treble c2 c \clef F % synonym for bass c2 c \clef C % synonym for alto c2 c
By adding _8
or ^8
to the clef name, the
clef is transposed one octave down or up respectively,
and _15
and ^15
transpose by two octaves.
Other integers can be used if required. Clef names containing
non-alphabetic characters must be enclosed in quotes
\clef treble c2 c \clef "treble_8" c2 c \clef "bass^15" c2 c \clef "alto_2" c2 c \clef "G_8" c2 c \clef "F^5" c2 c
Some special purpose clefs are described in Mensural clefs, Gregorian clefs, Default tablatures, and Custom tablatures.
Selected Snippets
Tweaking clef properties
The command \clef "treble_8"
is equivalent to setting
clefGlyph
, clefPosition
(which controls the vertical
position of the clef), middleCPosition
and
clefOctavation
. A clef is printed when any of the properties
except middleCPosition
are changed.
Note that changing the glyph, the position of the clef, or the
octavation does not in itself change the position of subsequent notes
on the staff: the position of middle C must also be specified to do
this. The positional parameters are relative to the staff center line,
positive numbers displacing upwards, counting one for each line and
space. The clefOctavation
value would normally be set to 7, -7,
15 or -15, but other values are valid.
When a clef change takes place at a line break the new clef symbol is
printed at both the end of the previous line and the beginning of the
new line by default. If the warning clef at the end of the previous
line is not required it can be suppressed by setting the Staff
property explicitClefVisibility
to the value
end-of-line-invisible
. The default behavior can be recovered
with \unset Staff.explicitClefVisibility
.
The following examples show the possibilities when setting these properties manually. On the first line, the manual changes preserve the standard relative positioning of clefs and notes, whereas on the second line, they do not.
\layout { ragged-right = ##t } { % The default treble clef c'1 % The standard bass clef \set Staff.clefGlyph = #"clefs.F" \set Staff.clefPosition = #2 \set Staff.middleCPosition = #6 c'1 % The baritone clef \set Staff.clefGlyph = #"clefs.C" \set Staff.clefPosition = #4 \set Staff.middleCPosition = #4 c'1 % The standard choral tenor clef \set Staff.clefGlyph = #"clefs.G" \set Staff.clefPosition = #-2 \set Staff.clefOctavation = #-7 \set Staff.middleCPosition = #1 c'1 % A non-standard clef \set Staff.clefPosition = #0 \set Staff.clefOctavation = #0 \set Staff.middleCPosition = #-4 c'1 \break % The following clef changes do not preserve % the normal relationship between notes and clefs: \set Staff.clefGlyph = #"clefs.F" \set Staff.clefPosition = #2 c'1 \set Staff.clefGlyph = #"clefs.G" c'1 \set Staff.clefGlyph = #"clefs.C" c'1 \set Staff.clefOctavation = #7 c'1 \set Staff.clefOctavation = #0 \set Staff.clefPosition = #0 c'1 % Return to the normal clef: \set Staff.middleCPosition = #0 c'1 }
See also
Notation Reference: Mensural clefs, Gregorian clefs, Default tablatures, Custom tablatures.
Snippets: Pitches.
Internals Reference: Clef_engraver, Clef, OctavateEight, clef-interface.
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Key signature
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.
The key signature indicates the tonality in which a piece is played. It is denoted by a set of alterations (flats or sharps) at the start of the staff. The key signature may be altered:
\key pitch mode
Here, mode
should be \major
or \minor
to get a key signature of pitch
-major or
pitch
-minor, respectively. You may also use the
standard mode names, also called church modes:
\ionian
, \dorian
, \phrygian
, \lydian
,
\mixolydian
, \aeolian
, and \locrian
.
\key g \major fis1 f fis
Selected Snippets
Preventing natural signs from being printed when the key signature changes
When the key signature changes, natural signs are automatically printed
to cancel any accidentals from previous key signatures. This may be
prevented by setting to f
the printKeyCancellation
property in the Staff
context.
\relative c' { \key d \major a4 b cis d \key g \minor a4 bes c d \set Staff.printKeyCancellation = ##f \key d \major a4 b cis d \key g \minor a4 bes c d }
Non-traditional key signatures
The commonly used \key
command sets the keySignature
property, in the Staff
context.
To create non-standard key signatures, set this property directly. The format of this command is a list:
\set Staff.keySignature = #`(((octave . step) . alter) ((octave
. step) . alter) ...)
where, for each element in the list,
octave
specifies the octave (0 being the octave from
middle C to the B above), step
specifies the note within the
octave (0 means C and 6 means B), and alter
is
,SHARP ,FLAT ,DOUBLE-SHARP
etc. (Note the leading comma.)
Alternatively, for each item in the list, using the more concise format
(step . alter)
specifies that the same alteration should hold in all
octaves.
Here is an example of a possible key signature for generating a whole-tone scale:
\relative c' { \set Staff.keySignature = #`(((0 . 6) . ,FLAT) ((0 . 5) . ,FLAT) ((0 . 3) . ,SHARP)) c4 d e fis aes4 bes c2 }
See also
Music Glossary: church mode, scordatura.
Learning Manual: Accidentals and key signatures.
Snippets: Pitches.
Internals Reference: KeyChangeEvent, Key_engraver, Key_performer, KeyCancellation, KeySignature, key-cancellation-interface, key-signature-interface.
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Ottava brackets
Ottava brackets introduce an extra transposition of an octave for the staff:
a2 b \ottava #-2 a2 b \ottava #-1 a2 b \ottava #0 a2 b \ottava #1 a2 b \ottava #2 a2 b
Selected Snippets
Ottava text
Internally, \ottava
sets the properties ottavation
(for
example, to 8va
or 8vb
) and middleCPosition
. To
override the text of the bracket, set ottavation
after invoking
\ottava
.
{ \ottava #1 \set Staff.ottavation = #"8" c''1 \ottava #0 c'1 \ottava #1 \set Staff.ottavation = #"Text" c''1 }
See also
Music Glossary: octavation.
Snippets: Pitches.
Internals Reference: Ottava_spanner_engraver, OttavaBracket, ottava-bracket-interface.
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Instrument transpositions
When typesetting scores that involve transposing instruments, some parts can be typeset in a different pitch than the concert pitch. In these cases, the key of the transposing instrument should be specified; otherwise the MIDI output and cues in other parts will produce incorrect pitches. For more information about quotations, see Quoting other voices.
\transposition pitch
The pitch to use for \transposition
should correspond to
the real sound heard when a c'
written on the staff is
played by the transposing instrument. This pitch is entered in
absolute mode, so an instrument that produces a real sound which
is one tone higher than the printed music should use
\transposition d'
. \transposition
should
only be used if the pitches are not being entered in
concert pitch.
Here are a few notes for violin and B-flat clarinet where the parts have been entered using the notes and key as they appear in each part of the conductor’s score. The two instruments are playing in unison.
\new GrandStaff << \new Staff = "violin" { \relative c'' { \set Staff.instrumentName = #"Vln" \set Staff.midiInstrument = #"violin" % not strictly necessary, but a good reminder \transposition c' \key c \major g4( c8) r c r c4 } } \new Staff = "clarinet" { \relative c'' { \set Staff.instrumentName = \markup { Cl (B\flat) } \set Staff.midiInstrument = #"clarinet" \transposition bes \key d \major a4( d8) r d r d4 } } >>
The \transposition
may be changed during a piece. For
example, a clarinetist may switch from an A clarinet to a B-flat
clarinet.
\set Staff.instrumentName = #"Cl (A)" \key a \major \transposition a c d e f \textLengthOn s1*0^\markup { Switch to B\flat clarinet } R1 \key bes \major \transposition bes c2 g
See also
Music Glossary: concert pitch, transposing instrument.
Notation Reference: Quoting other voices, Transpose.
Snippets: Pitches.
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Automatic accidentals
There are many different conventions on how to typeset accidentals. LilyPond provides a function to specify which accidental style to use. This function is called as follows:
\new Staff << #(set-accidental-style 'voice) { … } >>
The accidental style applies to the current Staff
by
default (with the exception of the styles piano
and
piano-cautionary
, which are explained below). Optionally,
the function can take a second argument that determines in which
scope the style should be changed. For example, to use the same
style in all staves of the current StaffGroup
, use:
#(set-accidental-style 'voice 'StaffGroup)
The following accidental styles are supported. To demonstrate each style, we use the following example:
musicA = { << \relative c' { cis'8 fis, d'4 <a cis>8 f bis4 | cis2. <c, g'>4 | } \\ \relative c' { ais'2 cis, | fis8 b a4 cis2 | } >> } musicB = { \clef bass \new Voice { \voiceTwo \relative c' { <fis, a cis>8 <fis a cis> \change Staff = up cis' cis \change Staff = down <fis, a> <fis a> \showStaffSwitch \change Staff = up dis'4 | \change Staff = down <fis, a cis>4 gis <f a d>2 | } } } \new PianoStaff { << \context Staff = "up" { #(set-accidental-style 'default) \musicA } \context Staff = "down" { #(set-accidental-style 'default) \musicB } >> }
Note that the last lines of this example can be replaced by the following, as long as the same accidental style should be used in both staves.
\new PianoStaff { << \context Staff = "up" { %%% change the next line as desired: #(set-accidental-style 'default 'Score) \musicA } \context Staff = "down" { \musicB } >> }
-
default
-
This is the default typesetting behavior. It corresponds to eighteenth-century common practice: accidentals are remembered to the end of the measure in which they occur and only in their own octave. Thus, in the example below, no natural signs are printed before the
b
in the second measure or the lastc
: -
voice
-
The normal behavior is to remember the accidentals at
Staff
-level. In this style, however, accidentals are typeset individually for each voice. Apart from that, the rule is similar todefault
.As a result, accidentals from one voice do not get canceled in other voices, which is often an unwanted result: in the following example, it is hard to determine whether the second
a
should be played natural or sharp. Thevoice
option should therefore be used only if the voices are to be read solely by individual musicians. If the staff is to be used by one musician (e.g., a conductor or in a piano score) thenmodern
ormodern-cautionary
should be used instead. -
modern
-
This rule corresponds to the common practice in the twentieth century. It prints the same accidentals as
default
, with two exceptions that serve to avoid ambiguity: after temporary accidentals, cancellation marks are printed also in the following measure (for notes in the same octave) and, in the same measure, for notes in other octaves. Hence the naturals before theb
and thec
in the second measure of the upper staff: -
modern-cautionary
-
This rule is similar to
modern
, but the ‘extra’ accidentals (the ones not typeset bydefault
) are typeset as cautionary accidentals. They are by default printed with parentheses, but they can also be printed in reduced size by defining thecautionary-style
property ofAccidentalSuggestion
. -
modern-voice
-
This rule is used for multivoice accidentals to be read both by musicians playing one voice and musicians playing all voices. Accidentals are typeset for each voice, but they are canceled across voices in the same
Staff
. Hence, thea
in the last measure is canceled because the previous cancellation was in a different voice, and thed
in the lower staff is canceled because of the accidental in a different voice in the previous measure: -
modern-voice-cautionary
-
This rule is the same as
modern-voice
, but with the extra accidentals (the ones not typeset byvoice
) typeset as cautionaries. Even though all accidentals typeset bydefault
are typeset with this rule, some of them are typeset as cautionaries. -
piano
-
This rule reflects twentieth-century practice for piano notation. Its behavior is very similar to
modern
style, but here accidentals also get canceled across the staves in the sameGrandStaff
orPianoStaff
, hence all the cancellations of the final notes.This accidental style applies to the current
GrandStaff
orPianoStaff
by default. -
piano-cautionary
-
This is the same as
piano
but with the extra accidentals typeset as cautionaries. -
neo-modern
-
This rule reproduces a common practice in contemporary music: accidentals are printed like with
modern
, but they are printed again if the same note appears later in the same measure – except if the note is immediately repeated. -
neo-modern-cautionary
-
This rule is similar to
neo-modern
, but the extra accidentals are printed as cautionary accidentals. -
neo-modern-voice
-
This rule is used for multivoice accidentals to be read both by musicians playing one voice and musicians playing all voices. Accidentals are typeset for each voice as with
neo-modern
, but they are canceled across voices in the sameStaff
. -
neo-modern-voice-cautionary
-
This rule is similar to
neo-modern-voice
, but the extra accidentals are printed as cautionary accidentals. -
dodecaphonic
-
This rule reflects a practice introduced by composers at the beginning of the 20th century, in an attempt to abolish the hierarchy between natural and non-natural notes. With this style, every note gets an accidental sign, including natural signs.
-
teaching
-
This rule is intended for students, and makes it easy to create scale sheets with automagically created cautionary accidentals. Accidentals are printed like with
modern
, but cautionary accidentals are added for all sharp or flat tones specified by the key signature, except if the note is immediately repeated. -
no-reset
-
This is the same as
default
but with accidentals lasting ‘forever’ and not only within the same measure: -
forget
-
This is the opposite of
no-reset
: Accidentals are not remembered at all – and hence all accidentals are typeset relative to the key signature, regardless of what came before in the music. Unlikedodecaphonic
, this rule never prints any naturals.
Selected Snippets
Dodecaphonic-style accidentals for each note including naturals
In early 20th century works, starting with Schoenberg, Berg and Webern (the “Second” Viennese school), every pitch in the twelve-tone scale has to be regarded as equal, without any hierarchy such as the classical (tonal) degrees. Therefore, these composers print one accidental for each note, even at natural pitches, to emphasize their new approach to music theory and language.
This snippet shows how to achieve such notation rules.
\markup { This snippet is deprecated as of version 2.12 and will be removed from the documentation in 2.14. }
See also
Snippets: Pitches.
Internals Reference: Accidental, Accidental_engraver, GrandStaff, PianoStaff, Staff, AccidentalSuggestion, AccidentalPlacement, accidental-suggestion-interface.
Known issues and warnings
Simultaneous notes are considered to be entered in sequential
mode. This means that in a chord the accidentals are typeset as
if the notes in the chord happen one at a time, in the order in
which they appear in the input file. This is a problem when
accidentals in a chord depend on each other, which does not happen
for the default accidental style. The problem can be solved by
manually inserting !
and ?
for the
problematic notes.
Cautionary cancellation of accidentals is done by looking at previous measure.
However, in the \alternative
block following a \repeat volta N
section, one would expect the cancellation being calculated using the previous
played measure, not previous printed measure.
In the following example, the natural c
in the second alternative does
not need a natural sign:
The following work-around can be used: define a function that locally changes
the accidental style to forget
:
forget = #(define-music-function (parser location music) (ly:music?) #{ #(set-accidental-style 'forget) $music #(set-accidental-style 'modern) #}) { #(set-accidental-style 'modern) \time 2/4 \repeat volta 2 { c'2 } \alternative { cis' \forget c' } }
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Ambitus
The term ambitus (pl. ambitus) denotes a range of pitches for a given voice in a part of music. It may also denote the pitch range that a musical instrument is capable of playing. Ambitus are printed on vocal parts so that performers can easily determine if it matches their capabilities.
Ambitus are denoted at the beginning of a piece near the initial clef. The range is graphically specified by two note heads that represent the lowest and highest pitches. Accidentals are only printed if they are not part of the key signature.
\layout { \context { \Voice \consists "Ambitus_engraver" } } \relative c'' { aes c e2 cis,1 }
Selected Snippets
Adding ambitus per voice
Ambitus can be added per voice. In this case, the ambitus must be moved manually to prevent collisions.
\new Staff << \new Voice \with { \consists "Ambitus_engraver" } \relative c'' { \override Ambitus #'X-offset = #2.0 \voiceOne c4 a d e f1 } \new Voice \with { \consists "Ambitus_engraver" } \relative c' { \voiceTwo es4 f g as b1 } >>
Ambitus with multiple voices
Adding the Ambitus_engraver
to the Staff
context creates
a single ambitus per staff, even in the case of staves with multiple
voices.
\new Staff \with { \consists "Ambitus_engraver" } << \new Voice \relative c'' { \voiceOne c4 a d e f1 } \new Voice \relative c' { \voiceTwo es4 f g as b1 } >>
Changing the ambitus gap
It is possible to change the default gap setting for ambitus.
\layout { \context { \Voice \consists "Ambitus_engraver" } } \new Staff { \time 2/4 % Default setting c'4 g'' } \new Staff { \time 2/4 \override AmbitusLine #'gap = #0 c'4 g'' } \new Staff { \time 2/4 \override AmbitusLine #'gap = #1 c'4 g'' } \new Staff { \time 2/4 \override AmbitusLine #'gap = #1.5 c'4 g'' }
See also
Music Glossary: ambitus.
Snippets: Pitches.
Internals Reference: Ambitus_engraver, Voice, Staff, Ambitus, AmbitusAccidental, AmbitusLine, AmbitusNoteHead, ambitus-interface.
Known issues and warnings
There is no collision handling in the case of multiple per-voice ambitus.
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