Lemzwerg: New category

2025-11-21T23:14:25Z

New category

← Older revision		Revision as of 23:14, 21 November 2025
Line 156:		Line 156:
	[[Category:Pitches]]		[[Category:Pitches]]
	[[Category:Really cool]]		[[Category:Really cool]]
	[[Category:Real music]][[Category:Snippet]]		[[Category:Real music]]
			[[Category:Snippet]]

Lemzwerg at 22:50, 21 November 2025

2025-11-21T22:50:54Z

← Older revision		Revision as of 22:50, 21 November 2025
Line 156:		Line 156:
	[[Category:Pitches]]		[[Category:Pitches]]
	[[Category:Really cool]]		[[Category:Really cool]]
	[[Category:Real music]]		[[Category:Real music]][[Category:Snippet]]

Jean Abou Samra: Replace version="2.24.0" with version="2.24" now that the LilyWiki extension supports auto-selecting the latest release in a stable series

2025-11-16T18:58:14Z

Replace version="2.24.0" with version="2.24" now that the LilyWiki extension supports auto-selecting the latest release in a stable series

← Older revision		Revision as of 18:58, 16 November 2025
Line 1:		Line 1:
	This example shows how to repeat the same rhythm with different pitches. As an example the whole prelude in C major of Bach's Well-Tempered Klavier 1 is included. See comments in the snippet to see how it is used.		This example shows how to repeat the same rhythm with different pitches. As an example the whole prelude in C major of Bach's Well-Tempered Klavier 1 is included. See comments in the snippet to see how it is used.

	<lilypond version="2.24.0" full>		<lilypond version="2.24" full>
	%% http://lsr.di.unimi.it/LSR/Item?id=346		%% http://lsr.di.unimi.it/LSR/Item?id=346

Jean Abou Samra: Import snippet from LSR

2025-10-26T22:40:22Z

Import snippet from LSR

New page

This example shows how to repeat the same rhythm with different pitches. As an example the whole prelude in C major of Bach's Well-Tempered Klavier 1 is included. See comments in the snippet to see how it is used.

<lilypond version="2.24.0" full>
%% http://lsr.di.unimi.it/LSR/Item?id=346

% This file demonstrates how to typeset different pitches with the
% same rhythm.

% It defines a function, defineTransform,
% that you can use to make transformation functions.

% Call it like this:
% myTransformation =
% \defineTransform { c'4 c'8 c'8 d'16 d' d' d' < c' d' > }

% You have now defined a transformation with the name "myTransformation".
% The rhythm in the transformation must be specified with notes c' d' e' f' g' etc.

% After having defined the transformation, you can call it like this:

% \myTransformation { e gis }
% To insert the rhythm from the transformation,
% where c' is substituted with e and d' is substituted with gis

%%% The following scheme function is just some mumbo-jumbo
%%% That you should add at the top of your program:

defineTransform =
#(define-scheme-function (pattern)
(ly:music?)
(define-music-function (pitchseq)
(ly:music?)
(let ((pitches (list->vector
(reverse!
(fold-some-music
(lambda (m)
(ly:pitch? (ly:music-property m 'pitch)))
(lambda (m l)
(cons (ly:music-property m 'pitch) l))
'()
pitchseq))))
(m (ly:music-deep-copy pattern)))
(for-some-music
(lambda (m)
(let ((p (ly:music-property m 'pitch)))
(and (ly:pitch? p)
(begin
(set! (ly:music-property m 'pitch)
(vector-ref pitches
(ly:pitch-steps p)))
#t))))
m)
m)))

%%% To illustrate, here follows the Bach Prelude in C major,
%%% Typeset using defineTransform:

% This is the unabridged version of the whole Prelude.
% If we were to implement it in the documentation, we
% might have to consider commenting about 80% of it. -vv

\include "deutsch.ly"

%%% This defines one measure of the prelude,
%%% using the five notes c' d' e' f' g' instead of the "real" notes:
makePreludeMeasure =
\defineTransform \transpose c c' \repeat unfold 2 {
<<
\context Staff = "up" {r8 e16 f g e f g }
\context Staff = "down" << {r16 d8.~d4 } \\ { c2 } >>
>>
}

%%% This is the last two measures - defined normally:
ending = <<
\context Staff = up { s1*2 }
\context Staff = up { r8 f,16 a, c f c a, \stemUp c \change Staff = down
a, f, a, f, d, f, d, \change Staff = up \stemNeutral
r8 g16 h d' f' d' h d' h g h d f e\prall d <e g c'>1^\fermata \bar "|."
}
\context Staff = down <<
\new Voice {
\stemUp \tieUp r16 c,8.~c,4~c,2 r16 h,,8.~h,,4~h,,2 c,1 \bar "|."
}
\new Voice {
\stemDown \tieDown c,,2~c,, c,,~c,, c,,1_\fermata
}
>>
>>

\header {
title = "Praeludium in C major"
composer = "J. S. Bach"
}

\score {
\transpose c c' \context PianoStaff <<
\new Staff = "up" { \clef "G" }
\new Staff = "down" { \clef "F"
\tempo 4 = 80
%%% The first measure should use notes c e g c' e' :
\makePreludeMeasure {c e g c' e' }
%%% Etc. :
\makePreludeMeasure {c d a d' f' }
%we get the idea now.
%comment the following block if the snippet is too long.

\makePreludeMeasure {h, d g d' f' }
\makePreludeMeasure {c e g c' e' }

\makePreludeMeasure {c e a e' a' }
\makePreludeMeasure {c d fis a d' }
\makePreludeMeasure {h, d g d' g' }
\makePreludeMeasure {h, c e g c' }
\makePreludeMeasure {a, c e g c' }
\makePreludeMeasure {d, a, d fis c' }
\makePreludeMeasure {g, h, d g h }
\makePreludeMeasure {g, b, e g cis' }
\makePreludeMeasure {f, a, d a d' }
\makePreludeMeasure {f, as, d f h }
\makePreludeMeasure {e, g, c g c' }
\makePreludeMeasure {e, f, a, c f }
\makePreludeMeasure {d, f, a, c f }

\makePreludeMeasure {g,, d, g, h, f }
\makePreludeMeasure {c, e, g, c e }
\makePreludeMeasure {c, g, b, c e }
\makePreludeMeasure {f,, f, a, c e }
\makePreludeMeasure {fis,, c, a, c es }
\makePreludeMeasure {as,, f, h, c d }
\makePreludeMeasure {g,, f, g, h, d }
\makePreludeMeasure {g,, e, g, c e }
\makePreludeMeasure {g,, d, g, c f }
\makePreludeMeasure {g,, d, g, h, f }
\makePreludeMeasure {g,, es, a, c fis }
\makePreludeMeasure {g,, e, g, c g }
\makePreludeMeasure {g,, d, g, c f }
\makePreludeMeasure {g,, d, g, h, f }
\makePreludeMeasure {c,, c, g, b, e }
%%% Finally insert the ending:
\ending
% here ends the block to comment

}
>>

\layout {}
\midi {}
}
</lilypond>

[[Category:Scheme]]
[[Category:Scheme]]
[[Category:Pitches]]
[[Category:Really cool]]
[[Category:Real music]]

Creating music with Scheme (music box) - Revision history

Lemzwerg: New category

Lemzwerg at 22:50, 21 November 2025

Jean Abou Samra: Replace version="2.24.0" with version="2.24" now that the LilyWiki extension supports auto-selecting the latest release in a stable series

Jean Abou Samra: Import snippet from LSR