MusicBrainz Picard is an open-source cross-platform music tagger written in Python. While Ubuntu repositories provide an old version of the software, here’s how to install the latest release (Picard 1.4.2 so far) in Ubuntu 16.04, and higher.

MusicBrainz Picard has an official Ubuntu PPA repository, however, it’s not been updated for more than a year. It now publishes the official Linux binaries only through Flathub repository.

1. Install Flatpak (Ubuntu 16.04 only).

While Ubuntu 16.04 does not ship Flatpak in the default repositories, open terminal via Ctrl+Alt+T and run commands to install it from the PPA.

1. Add the flatpak PPA via command (type your password when prompts and hit enter):

   sudo add-apt-repository ppa:alexlarsson/flatpak

   

2. Then install flatpak via commands:

   sudo apt-get update
   
   sudo apt-get install flatpak

2. Add the Flathub repository via command:

flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo

3. Finally grab and install the music tagger via command:

flatpak install flathub org.musicbrainz.Picard

Log out and back in after installation and then launch it from Unity Dash, Gnome launcher and enjoy!

Uninstall:

To uninstall the music tagger, run command:

flatpak uninstall --app org.musicbrainz.Picard

And remove the repository:

flatpak remote-delete flathub