Re: midiInstrument changes play one note too late.

[Michael Ellis]

On Tue, Mar 13, 2012 at 5:26 PM, Michael Ellis
<address@hidden> wrote:
> Is this a known problem?  I don't see any prior reports online and
> I've been seeing it since at least 2.12 but assumed it was because I
> was doing some fairly complicated things.  I took time to reduce it to
> a minimal example today. It's still present in 2.15.33 as shown by the
> example below.  FWIW, I'm running OS X 10.6.7 and playing the midi
> with QuickTime.  I'm attaching the midi file.
>
> Is there a workaround?
>
> Thanks,
> Mike
>
> %% Minimal Example
> %% BUG? Midi instrument changes are delayed by one note.
> mymusic = {
>
>   \set midiInstrument = "acoustic grand"
>   c'1^"pno." |  % midi ok
>
>   \set midiInstrument = "cello"
>   d'1^"cel." |  % wrong : midi plays piano.
>
>   \set midiInstrument = "acoustic grand"
>   e'1^"pno." |  % wrong : midi plays cello
>   c'1^"pno." |  % midi ok
>
> }
>
> \score {
>
>         \new Voice = "Test" { \mymusic  }
>         \layout {}
>
>         \midi {
>             % This lets us specify instrument in melody
>             \context {
>                 \Staff
>                 \remove "Staff_performer"
>             }
>             \context {
>                 \Voice
>                 \consists "Staff_performer"
>             }
>         }
>     }
>
> \version "2.15.33"
>

Wow. It's rare not to get a response from this list.  Did I phrase the
question incredibly poorly?