Non-traditional key signatures: Difference between revisions
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To create non-standard key signatures, set this property directly. The format of this command is a list: | To create non-standard key signatures, set this property directly. The format of this command is a list: | ||
< | : <code>\set Staff.keyAlterations =</code> | ||
:: <code>#`(((<var>octave</var> . <var>step</var>) . <var>alter</var>) ((<var>octave</var> . <var>step</var>) . <var>alter</var>) ...)</code> | |||
Alternatively, | where, for each element in the list, <var>octave</var> specifies the octave (0 being the octave from middle C to the B above), <var>step</var> specifies the note within the octave (0 means C and 6 means B), and <var>alter</var> is one of <code>SHARP</code>, <code>FLAT</code>, <code>DOUBLE-SHARP</code>, etc., preceded by a comma. | ||
Alternatively, you can use the more concise format <code>(<var>step</var> . <var>alter</var>)</code> for each item in the list if the same alterations are used in all octaves. | |||
For microtonal scales where a “sharp” is not 100 cents, <code>alter</code> refers to the alteration as a proportion of a 200-cent whole tone. | For microtonal scales where a “sharp” is not 100 cents, <code>alter</code> refers to the alteration as a proportion of a 200-cent whole tone. | ||
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<lilypond version="2.24"> | <lilypond version="2.24"> | ||
\include "arabic.ly" | \include "arabic.ly" | ||
\relative do' { | \relative do' { | ||
\set Staff.keyAlterations = #`((0 . ,SEMI-FLAT) | \set Staff.keyAlterations = #`((0 . ,SEMI-FLAT) | ||
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(5 . ,FLAT) | (5 . ,FLAT) | ||
(6 . ,SEMI-FLAT)) | (6 . ,SEMI-FLAT)) | ||
%\set Staff.extraNatural = ##f | % \set Staff.extraNatural = ##f | ||
re reb \dwn reb resd | re reb \dwn reb resd | ||
dod dob dosd \dwn dob | | dod dob dosd \dwn dob | | ||
Revision as of 13:29, 29 November 2025
The commonly used \key command sets the keyAlterations 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.keyAlterations =#`(((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 one of SHARP, FLAT, DOUBLE-SHARP, etc., preceded by a comma.
Alternatively, you can use the more concise format (step . alter) for each item in the list if the same alterations are used in all octaves.
For microtonal scales where a “sharp” is not 100 cents, alter refers to the alteration as a proportion of a 200-cent whole tone.
\version "2.24"
\include "arabic.ly"
\relative do' {
\set Staff.keyAlterations = #`((0 . ,SEMI-FLAT)
(1 . ,SEMI-FLAT)
(2 . ,FLAT)
(5 . ,FLAT)
(6 . ,SEMI-FLAT))
% \set Staff.extraNatural = ##f
re reb \dwn reb resd
dod dob dosd \dwn dob |
dobsb dodsd do do |
}