You can recover .mscz, files using MuseScore and then export the music score sheets to various formats supported by the program, including .cap files used by Capella for its music sheets. This is likely only way for mscz, to cap conversion.
Convert MuseScore music score backup to Capella music sheet data file.
We have found one software suitable in our database for this conversion.
Microsoft Windows software - convert mscz, to cap on Windows
A free cross-platform WYSIWYG music notation software
Convert from mscz, file format
|Yes, MuseScore supports mscz, file conversion as a source file type.||Yes||Yes||mscz, editor||Yes||No||No||No|
|Yes, MuseScore supports cap file conversion as a target file type.||Yes||No||No||No||No||No||No|
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.