mutagen-tools 
Personal tools for using the excellent Mutagen metadata library.
Tools
Here are tools provided by this library, please check out the --help documentation provided by each command.
flac2id3
Copies and translates FLAC Vorbis tags into an ID3/MP3 file.
flacclear
Removes all FLAC Vorbis tags and pictures from a FLAC file.
flacjson
Renders a FLAC file's tags and optionally its pictures into JSON.
id3clean
Removes private identification tags used by Google Play Music from an ID3/MP3 file.
id3clear
Removes all ID3 tags from an ID3/MP3 file.
id3json
Renders an ID3/MP3 file's tags and optionally its pictures into JSON.