> On 10 May 2024, at 20:18, msk...@ansuz.sooke.bc.ca wrote:
>
> On Fri, 10 May 2024, Hans Åberg wrote:
>
>> To change the MIDI output, you will need to change the notes, say by
>> transposing or something else.
>
> MIDI files can include events ("key-change meta messages") for key
> signatures, each specifying a root and whether it's major or minor (which
> actually makes them more expressive than standard notation which can't
> distinguish, for instance, between C major and A minor). Lilypond
> generates these events in the MIDI files on each key change in my
> installation. If Giles's installation appears not to, I wonder whether
> that may be due to an issue with the software he's using to examine the
> MIDI files.
>
> For instance, this input produces a MIDI file with key-change events at
> the indicated places:
>
> \score {
> \new Voice {
> \key c \major
> c'4 d'4 e'4 f'4 |
> \key d \minor
> bes4 a4 g4 f4 |
> }
> \layout { }
> \midi { }
> }
Programs like ABC work so that one writes the music without accidentals, and
then apply a key signature to get them. It was my reading that the OP asked for
that.
