Free online SGU to MSCZ converter

Band-in-a-Box song files use the SGU format, while MuseScore uses MSCZ for editable scores. Convert an SGU file when you need to open its musical material in MuseScore, edit notation, or share a MuseScore score.

What the SGU format is

SGU is a Band-in-a-Box song file, typically containing chord changes, tempo, key, and style information without a melody track. Band-in-a-Box uses it to generate accompaniment; you may encounter SGU files in arrangements or projects created with that program.

What the MSCZ format is

MSCZ is MuseScore’s compressed native score format. It stores editable notation and score settings, making it suitable for working on a score in MuseScore and sharing that project with other MuseScore users.

How to convert SGU to MSCZ

Online on 101convert.com

1. Upload the SGU file to the converter on this page. You can add several files for batch conversion; the per-file size limit is shown on the page.
2. Start the conversion. It runs on the site’s server with MuseScore.
3. Download the resulting MSCZ file.

Offline with desktop software

Band-in-a-Box and MuseScore provide an offline route on Windows and macOS. Export the SGU arrangement from Band-in-a-Box as a MIDI file, then import that MIDI into MuseScore and save it as MSCZ:

1. Open the SGU file in Band-in-a-Box and use File → Save Song as MIDI File to export a MIDI file.
2. Open the MIDI file in MuseScore, then use File → Save As and choose MSCZ as the file type.

Quality and limitations

The MIDI step transfers playback events, not Band-in-a-Box’s original style settings as editable notation. MuseScore may interpret the generated accompaniment as many notes or tracks, so review the imported score and adjust its layout or parts before saving.