MIDI export saves wrong instruments

• Jan 12, 2019 - 17:33

Hello,
if I export my music to a midi file in musescore then the wrong instruments are saved to it. The midi then sounds very different, even with the correct soundfont loaded. Why is that?
Even if I reimport it to musescore the instruments are not as configured them before the export.

That's how it should sound: https://www.dropbox.com/s/qqmfbbhb908228g/Elemental_Stars.mp3?dl=0
Here is the MIDI: https://www.dropbox.com/s/ikdan6gl6yfqgzt/Elemental_Stars.mid?dl=0

The MIDI was created with the default soundofnt of musescore.


Comments

MIDI files do not have any sound of their own, the sounds you hear when you play a MIDI file depend on the soundfont used by the program that plays that MIDI file. If I load your MIDI file into MuseScore and play it, then it sounds just like your MP3. But if you try loading it into any other program to play, then you will hear the sounds of that other program. That is the nature of MIDI - it doesn't contain sounds, on instructions on what notes to play.

In reply to by marcopianissimo

Feel free to attach your score so we can understand and assist better. But my guess is, you are using non-standard instrument assignments, either within MuseScore or within the program you are using to read the MIDI file. If you deviate from the General MIDI standard, you need to do so using both MuseScore and the program you use to read your MIDI files.

Alright, I figured out how to fix this issue. I know I'm over a year late, but I'm sure someone else will show up and have the same issue.

Long story short, some devices are incapable of using more than one port. MuseScore allows for exporting up to 16 different ports with 16 channels. Once again, many programs (including Windows Media Player) CANNOT use more than 1 single port. This means you need to fit every single unique instrument into 16 channels. Luckily, duplicate instruments can share a channel and export fine.

Keep in mind that many instruments actually occupy more than one channel. In the Mixer, you'll notice a right-facing arrow on every instrument. Sometimes, it's able to be clicked, and doing so reveals several more. For example, Violins (and all strings for that matter) have 3 in total: Arco, Pizzicato, and Tremolo. If you're only using Arco and not the other two, I'd go on each and set their channels to 16, which will be designated as unused. Yes, this does mean it's technically now only 15 total channels available. And no, you cannot place them all onto one channel. If you do, the instrument will sound like whatever the rightmost subinstrument is. In the case of a violin, it'll just make it constantly sound tremolo.

Additionally, and this is super important, channel 10 is ONLY for percussion. If you use a percussion or drumset on any other channel, it will play as a piano. If you use any other instrument on channel 10, it will use the percussion soundfont.

If you do have two instruments on the same channel, they'll all use the soundfont of the rightmost instrument in the mixer. I don't know if this has any practical application.

Finally, make sure you go to Preferences > Export > MIDI and check on "Export RPNs". This will allow your MIDI file to retain information such as pitch bending, vibrato, and other like information.

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