Re: Tried to use "music box" with Lilypond 2.22.2, get lots of Scheme errors

[Kenneth Wolcott]

HI Aaron;

  Thank you very much!  Works great now.

  A followup question: I don't think that this function supports the
"q" substitution for chord repetition, does it?

  I guess I'll find out :-)

Thanks,
Ken

On Tue, Sep 20, 2022 at 6:15 PM Aaron Hill <lilypond@hillvisions.com> wrote:
>
> On 2022-09-20 4:27 pm, Kenneth Wolcott wrote:
> > Hi;
> >
> > Tried to use "music box" with Lilypond 2.22.2, get lots of Scheme
> > errors.
> >
> > https://lsr.di.unimi.it/LSR/Search?q=music+box
> >
> > See attachments. I did not include my generated pdf file because it
> > pertains to the input file prior to trying to implement the music box.
> >
> > Thanks,
> > Ken Wolcott
> >
> > ~/bin/engrave.pl --lpv=2.22.2 --s=O_Holy_Night.ly
> > GNU LilyPond 2.22.2 (running Guile 2.2)
> > Processing `O_Holy_Night.ly'
> > Parsing...Backtrace:
> > [...]
> > ice-9/eval.scm:159:9: Value out of range 0 to 18446744073709551615: -14
>
> Review the documentation for LSR 346.  The transformation pattern must
> use notes starting from middle C.  Your pattern has notes in a much
> lower octave, which results in a negative index.  So, you would want to
> say something like this:
>
> %%%%
> make_bass_pattern = \defineTransform \tuplet 6/4 \fixed c' { c8( d e f g
> a) }
> %%%%
>
> However, you can do this more efficiently, removing the redundant notes:
>
> %%%%
> make_bass_pattern = \defineTransform \tuplet 6/4 \fixed c' { c8( d e f d
> e) } % 1 2 3 4 2 3
> % ...
> | \make_bass_pattern { g, g d b } \make_bass_pattern { b, g d b }
> | \make_bass_pattern { b, g d b } \make_bass_pattern { b, g d b }
> | \make_bass_pattern { b, g d b } \make_bass_pattern { c g e c' }
> % ...
> %%%%
>
>
> -- Aaron Hill