Re: transpose notes to new key?

[Graham Percival]

Define a major scale, and a minor scale.  To create major
scales, simply transpose the major scale.  To create minor scales,
transpose the minor scale.

major = \relative c' {
  \key c \major
  c d e f g a b c
}

minor = \relative c' {
  \key a \minor
  a b c d e f g a
}


If you want fancier minor scales, define them yourself -- but you
only need to write each one once; after that, do everything with
\transpose.

Cheers,
- Graham


On Tue, 17 Jun 2008 12:21:50 +1000
Mark <address@hidden> wrote:

> hi all ..warning noob.
> 
> transpose notes to a new key?
> 
> This is also hard to define so please bare with me.
> OR bypass the words and go straight to "Problem" at the bottom.
> 
> 
> Im using python and lilypond to create a bunch of key signature
> images. (png)
> that is: a bass clef, staff with appropriate key designators and a
> root note,3rd,5th and 7th to help show which notes are in the key.
> (not only am I a lilypond tadpole but also new to music and
> trying to learn bass
> guitar)
> 
> The idea being to help me learn the key signatures.
> The resulting images are simply slideshow like displayed and I try to
> remember/play them. I also hope to
> release this to the mnemosyne project as a flashcard deck.
> 
> DETAILS:
> So I use python to iterate through a list of keys. Major and minor.
> Inserting the keys into a lilypond text file format. (template below)
> Then I run lilypond over those files and get it to create png images..
> lovely little snippets of each key signature.
> 
> 
> Lilypond template file example Db minor
> %%%%%%%%%%%%
> \version "2.11.49"
> \sourcefileline 0
> 
> {
> \clef bass
> \key des \major
> \transpose c des {
> c e g b
> }
> }
> %%%%%%%%%%%%%%%
> 
> Python replaces the text "des" and "major" with other keys and
> "minor" as it iterates over the key list.
> Then the problems arise.
> I use transpose to produce the R,3,5,7 note progression to match the
> key. All this works beautifully!!
> But does not flatten the 3rd and 7th as expected when its a minor.
> Of course it cant . Transpose only shifts pitch it is unaware
> of key.
> 
> 
> PROBLEM:
> Keeping notes within the staff?
> If I use relative the notes tend to stay within the bounds of the
> staff. Perfect thats what I want. I dont require a progression in
> pitch. I just want to display the important notes of the key wherever
> they may lie.
> As long as they are within the limits of the staff lines.
> Why? this helps me to also learn/reinforce note positions on the
> staff. Relative is not used in the above example, but I have tried it
> in various positions. It either creates an "unexpected" error or is
> negated by the transpose.
> Transpose unfortunately pushes notes above or below the 5 main staff
> lines. I would really like to avoid this.
> 
> Transpose notes to a new key?
> Also transpose does not take into account the change in key from
> the cegb (major)given to the c ees f g bes needed for correct minor 
> intonation.
> is there a lilypond way of solving this or do I calculate the
> transpose and altered minor major adjustments in python and simply
> insert the notes into the
> lily script.
> 
> 
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