Export to mp3
Starting with a full orchestral score including SATB, I'm trying to export an mp3 practice track to a singer. Starting with the full score, I open the Mixer and select two parts, the soprano line and the timpani line and create a soprano musescore file. When I play that file on Musecore, it plays the soprano and timpani parts just as I desire for it to do. However, when I export the musescore file to mp3, it plays all of the orchestral parts. How do I fix this so that the mp3 plays the same thing as the musescore file?