- Data not directly related to a song, but useful for debugging and other
purposes. Other items include modification time and the name of the
application used to create the song.
- song properties
- Additional information about a song. There can be author name, copyright
information, publisher, release date, etc.
- Clasifying songs to various groups along suitability.
- Transcription of text in one alphabet to another while retaining
the language it was written in. For instance writing Chinese characters