MuseScore is a free and open-source music notation software. It can be used to create, edit, and play back music. MuseScore can also be used to convert sheet music into audio files.
You can download MuseScore from the following websites:
* Windows: https://musescore.org/en/download/windows
* Mac: https://musescore.org/en/download/mac
* Linux: https://musescore.org/en/download/linux