easytag is in the usual repository, but it has strange behavior. I installed it, started it, looked around, and changed the directory, only to be confronted with a message along the lines of: "Files have been modified; save or discard?" Except that I made no changes at all. I uninstalled it.

I also found easytag had some database lookup and (re)generate actions happening,

but once it's user-settings are configured it doesent hunt around so much.

I still like easytag.

I marked the thread as SOLVED because I have some promising leads.

Any chance you could share them here? I'm sure other people who might face the same problem would find them useful.

$ apt-cache search kid3
kid3 - KDE audio tag editor
kid3-cli - Command line audio tag editor
kid3-core - Audio tag editor core libraries and data
kid3-qt - Audio tag editor
$ apt-cache showpkg  kid3
Package: kid3
Versions: 
3.8.5-3 (/var/lib/apt/lists/deb.devuan.org_merged_dists_chimaera_main_binary-amd64_Packages)
 Description Language: 
                 File: /var/lib/apt/lists/deb.devuan.org_merged_dists_chimaera_main_binary-amd64_Packages
                  MD5: 62c283c9a6db1de53afbc80f8d4105f8
 Description Language: en
                 File: /var/lib/apt/lists/deb.devuan.org_merged_dists_chimaera_main_i18n_Translation-en
                  MD5: 62c283c9a6db1de53afbc80f8d4105f8

Reverse Depends: 
  kid3-core,kid3 3.8.5-2
  kid3-core,kid3 3.8.5-2
  kid3-cli,kid3 3.0.2-2
  kid3-cli,kid3 3.0.2-2
Dependencies: 
3.8.5-3 - kio (0 (null)) libc6 (2 2.14) libgcc-s1 (2 3.0) libkf5configcore5 (2 4.97.0) libkf5configgui5 (2 4.97.0) libkf5configwidgets5 (2 5.23.0) libkf5coreaddons5 (2 4.100.0) libkf5kiocore5 (2 5.69.0) libkf5widgetsaddons5 (2 4.96.0) libkf5xmlgui5 (2 4.98.0) libqt5core5a (2 5.15.1) libqt5gui5 (18 5.7.0) libqt5gui5-gles (2 5.7.0) libqt5widgets5 (2 5.0.2) libstdc++6 (2 4.1.1) kid3-core (5 3.8.5-3) 
Provides: 
3.8.5-3 - 
Reverse Provides:

$ apt-cache search falso
exfalso - audio tag editor for GTK+
quodlibet - audio library manager and player for GTK3
$ apt-cache showpkg exfalso
Package: exfalso
Versions: 
4.3.0-1 (/var/lib/apt/lists/deb.devuan.org_merged_dists_chimaera_main_binary-amd64_Packages) (/var/lib/dpkg/status)
 Description Language: 
                 File: /var/lib/apt/lists/deb.devuan.org_merged_dists_chimaera_main_binary-amd64_Packages
                  MD5: fcc2776342ffcd06e76d0d3544249a2e
 Description Language: en
                 File: /var/lib/apt/lists/deb.devuan.org_merged_dists_chimaera_main_i18n_Translation-en
                  MD5: fcc2776342ffcd06e76d0d3544249a2e

Reverse Depends: 
  quodlibet,exfalso 4.3.0-1
Dependencies: 
4.3.0-1 - gir1.2-gtk-3.0 (0 (null)) gir1.2-soup-2.4 (0 (null)) python3 (2 3.5) python3-feedparser (0 (null)) python3-gi (0 (null)) python3-gi-cairo (0 (null)) python3-mutagen (2 1.34) python3:any (0 (null)) libjs-sphinxdoc (2 1.0) sphinx-rtd-theme-common (2 0.4.3+dfsg) quodlibet-plugins (0 (null)) python3-musicbrainzngs (0 (null)) brasero (16 (null)) k3b (16 (null)) xfburn (0 (null)) gir1.2-gstreamer-1.0 (0 (null)) libmodplug1 (0 (null)) quodlibet-plugins (0 (null)) 
Provides: 
4.3.0-1 - quodlibet-plugins (= ) 
Reverse Provides:

Thanks for the reply. I should have mentioned that my primary music is classical, for which metadata is often wrong, hence why I want to edit it.

Here's one such program - https://www.systutorials.com/docs/linux/man/1-grip/

One of the things I do when ripping is to ensure that the metadata is correct. In Windows it's easy, just use Properties. But in Linux, there does not appear to be a way to edit the properties of music files. Is there a way?