Re: MIDI & repeats

[Lukas-Fabian Moser]

Hi Benjamin,

Am 02.08.22 um 18:10 schrieb Benjamin Tordoff:
> Hi all, I’m wondering if there’s a smart way to make the midi output for a 
> particular part do the following two things (both common in Sousa marches):
>
> 1. Have a part play only on 2nd time through the repeat.
> 2. Have different dynamic for 1st and 2nd times through repeat.
>
> A minimal example of how I would typically typeset this is below but produces 
> midi output that plays all repeats with uniform volume. I've had a good hunt 
> around the internet for examples of doing this but either I'm searching for the 
> wrong things or this is a somewhat obscure request!
>
> Thanks in advance.

Some of this can be achieved using the \volta command:

\version "2.23.7"

myScore =
\relative {
  <>^"2nd time left, 3rd time right!"
  \repeat volta 3
  {
    \tag MIDI \volta 2 \set midiPanPosition = -1
    % \tag MIDI \volta 2 \set midiMaximumVolume = 0 % does not do 
anything; why?
    \tag MIDI \volta 3 \set midiPanPosition = 1
    c'4 d \tag MIDI \volta 3 <>\pp e f
  }
}

\score {
  \removeWithTag MIDI \myScore
}

\score {
  \unfoldRepeats \myScore
  \midi {}
  \layout {} % for debugging only
}

Here I used a tag to keep the print version of the score clean from all 
the MIDI stuff.

I just do not know why the setting of midiMaximumVolume does not do 
anything if put inside a \volta construction. For the pan position, it 
works like a charm...

Lukas