What is .MSCZ file extension?
Music score saved by MuseScore, a free program used for music composition and notation; contains a composition, including instruments, time and key signatures, and music notes; also contains score metadata such as composer, title, and copyright information.
MSCZ files are the standard save format for MuseScore. They are stored in a compressed Zip format. Uncompressed music scores are saved as .MSCX files (or .MSC files in MuseScore version 0.9.4 and earlier), which can be edited manually with a text editor.
You can see a list of software programs here on www.easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.