Re: Creating midi file that is not empty

[Gilles Sadowski]

Hello.

2020-08-08 2:33 UTC+02:00, Claire Meyer
<claire.meyer.bourhis.lilypond@gmail.com>:
> Hi everyone,
>
> I have read the documentation and have gone through the archives of the
> mailing list, and don't understand what I've got wrong. The midi file I
> generate is empty and doesn't contain music. My .ly file is as follows :
>
> \score {
>      {c''4 c'' c''}
>      \layout {}
>      \midi {\context {
>          \Score tempoWholesPerMinute = #(ly:make-moment 120 4)
>          }
>      }
> }
>
> The terminal doesn't give any errors at compilation, and says that :
>
> Requested buffer size 32768, fragment size 8192
> ALSA pcm 'default' set buffer size 32768, period size 8192 bytes
> Playing pianoClarinetUriTzion.midi
> MIDI file: pianoClarinetUriTzion.midi
> Format: 1  Tracks: 2  Divisions: 384
> Sequence:
> Text: creator:
> Text: GNU LilyPond 2.20.0
> Track name: \new:
> No instrument mapped to tone bank 0, program 0 - this instrument will not
> be heard

The above signals that some instrument will not be heard.
If there is only one instrument, silence will result. :-}
It's a MIDI player configuration issue.

One thing to try is perhaps setting the MIDI instrument explicitly.[1]
---CUT---
\set Staff.midiInstrument = "clarinet"
---CUT---

Regards,
Gilles

[1] https://lilypond.org/doc/v2.20/Documentation/notation/midi-instruments

> No pre-resampling cache hit
> Last 1 MIDI events are ignored
> Playing time: ~4 seconds
> Notes cut: 0
> Notes lost totally: 0
>
> When I try to read my midi file. Can someone help me ?
>
> Thanks in advance,
> Claire
>