.MSCX File

File extension mscx is most likely best known for its use in MuseScore music notation software

MSCX file is the uncompressed version of the MuseScore file format used in version 0.9.5 or later. A score saved in this format will not lose any information except images. The compressed version of the MuseScore music score file uses the mscz file extension.

Files with mscx suffix can be most often found as music scored prepared and saved using MuseScore music notation software.

How to open:

Except for MuseScore, you can open and view .mscx files using any text editor. However, to playback the score you will need the original program.

How to convert:

Possibly can be exported using Musescore.