Re: Rallentando and accelerando in MIDI

[Simon Albrecht]

Am 31.12.2014 00:32, schrieb David Sumbler:
> On Tue, 2014-12-30 at 22:04 +0100, Simon Albrecht wrote:
> > Am 30.12.2014 13:16, schrieb David Sumbler:
> > > Further to my query (below) yesterday about varying ralls and accels in
> > > midi, how do I actually get these to work at all?
> > >
> > > At the moment the articulate script is working correctly in executing
> > > trills, slurs etc.  But it ignores my "rit." markings and suchlike.  I
> > > have tried entering these using "\mark \markup" and also attaching
> > > "markup" to a note, but my midi files do not vary the tempo at all.
> > >
> > > What syntax should I use to enter ralls and accels in a score?
> > It’s not wholly clear what you tried, but I’d assume that <code>\tempo
> > "rit."</code> is what you want. The difference from \mark is mainly that
> > it lives in score and thus is printed only once above all staves, no
> > matter how many parts have the same tempo marking. And probably
> > articulate.ly will then interpret it correctly (yet I don’t have any
> > experience with that).
> >
> > HTH, Simon
> Thanks for that suggestion, which I have now tried.  Unfortunately it
> does not seem to have the hoped-for result.
>
> But it does raise another interesting question: how do I get tempo
> markings etc. to appear once above the score but also in each individual
> part?  I cannot find any reference to this in the Lilypond documentation
> (although I am sure it must be in there somewhere).  Previous pieces I
> have set in Lilypond have been for a single instrument or for a solo
> instrument with piano, so the question has not arisen before (because
> the markings are above the solo part in any case).  Do I perhaps need to
> have them in something like a separate Dynamics context which can be
> included in each part when it is extracted?
>
> David
No, normally you would do something like

\layout {
  \context { \Score
     \remove "Metronome_mark_engraver" }
  \context { \StaffGroup % or Staff or GrandStaff or whatever...
     \consists "Metronome_mark_engraver" }
}

If thus every StaffGroup has its own Metronome_mark_engraver, separate 
tempo indications will be printed above each of them.

HTH, Simon