Re: Transpose a lilypond file

[Urs Liska]

Am 5. Oktober 2014 11:18:42 MESZ, schrieb Marc Hohl <address@hidden>:
>Am 05.10.2014 um 10:03 schrieb Jay Vara:
>> I have a song.ly file which prints a song. Is it possible for someone
>to
>> print the song with a transposition, say c to d, without editing the
>.ly
>> file? Something like:
>>
>> \transpose c d {\include song.ly}
>
>I had a similar problem some time ago.
>
>I included the following lines in song.ly
>
>#(define transposeTo
>    (if (defined? 'transposeTo)
>        transposeTo
>        #{ c #}))
>
>melody = { ... }
>chords = {... }
>
>\score {
>    \transpose c $transposeTo
>    <<
>      ...chords ...
>      ...melody ...
>    >>
>}
>
>Then you simply make a new file song-in-d.ly:
>
>#(define transposeTo #{ d #})
>\include "song.ly"
>
>

Cool solution, I'll take this into my repertoire.

You can then factor out the function into a library file. And you could pass 
the variable on the commandline instead of adding a new file.

Urs

>
>HTH,
>
>Marc
>
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