Add Euphonium to musesounds
Writing for concert band is difficult due to the lack of euphonium in musesounds. This is a shame since the euphonium is a very beautiful instrument, and the old MS3 soundfont neither blends well with the rest of the musesounds family, nor sounds particularly good in a solo.
Comments
Meanwhile, you can try and use custom soundfonts.
There is a euphonium sf2 soundfont available here:
https://musescore.org/en/node/299576#comment-971402
(read the last sentence for the link)
Also see:
https://musescore.org/en/handbook/4/soundfonts#Install_a_SoundFont
and:
https://musescore.org/en/handbook/4/soundfonts#selectionworkarounds