The PMZ4 file extension is associated with the Power Music application that is used to manage cords, notations and music sheets. The PMZ4 file contains backup of songs stored in Power Music.
How to open:
Use Power Music to restore Power Music backup archive files.
How to convert:
As far as we know, this .pmz4 file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.