Greetings. Switching to Roon a couple months ago necessitated a better tag editor, primarily so I can take advantage of Roon's (classical) composition detection. Using "extract work and part from title", I end up with both work and part in the work field for Roon (I have Roon set in prefs>audio>common>application).

For example, a full title tag (sourced from Musicbrainz wizard) is "Piano Sonata No. 6 in F major, Op. 10 No. 2 - I. Allegro", all of which ends up as the Roon work tag after running "extract work and part from title". I'd be grateful for any help and suspect I'm missing something obvious.

Related, Roon seems rather fussy about autodetecting compositions such as the example above: "Op. XX No. YY", and prefers the format "Op. XX/YY". I didn't see any options or other Roon-related actions that would reformat the former into the latter, either to reformat the title tag prior to running "extract work and part from title", or as an option while running that action. Is one or the other possible?

Many thanks.

Quote from 2MR2 on February 8, 2026, 11:52

The Title field is not formatted according to the MusicBrainz spec. The metadata must have been entered incorrectly.

The - before I. Allegro should have been a :

I checked again and Musicbrainz wizard is calling the correct album, dashes included in titles. (see screenshot). Maybe you meant that data was entered incorrectly in Musicbrainz.

If you manually change the - to a : it will work as expected.

This did work, thanks.

I'll look into this and update the action accordingly. I'll have to delve into the code as there are variants of No.and Op. that are permitted. I'll look into an option to see if it's possible to handle the - as well

Thanks again.

Did my question about Roon's preference for Opus # formatting make sense? Related to the Yate action for Roon work & part, that is.

Actually I'm a little surprised as Roon typically likes MusicBrainz formatting. Further, the no. notation is pretty much standard.

I thought that I could simply change the Title field with a regex but that doesn't work as the parsing then gets an error on the opus formatting. This means I have to do the Work and Part extraction first, then modify the opus sequence.

Try calling the following action instead of Extract Work and Part from Title. It'll change the Op.,no. sequences to Op. n/m

https://2manyrobots.com/actions/Adjust-Opus-Sequences-in-Title-for-Roon.zip

I'm not sure if you needed it modified in Title and/or Work field. The action does both. If you only want one or the other, open the action and disable the unwanted statement. Line 4 is Work. Line 5 is Title.

Let me know if it works for you.

I've updated the action to handle what I think is all cases.

As far as the - as opposed to the : I think it is somewhat dangerous as there is no reason why the title cannot contain a -. That being said I've written an action to test if a track can be identified as classical; if it can and Part is empty the last - in Title, (if any), will be replaced by a :. The files are modified but not saved. You can always revert if you do not like the results.

Download:

https://2manyrobots.com/actions/Classical-Title-Manipulation.zip

The bundle contains the following:

Folder: Classical Title Manipulation
Attempt to Fix Title for Classical (Version 1.0)
Correct Missing : in Classical Title (Version 1.0)
Adjust Opus Sequences in Title for Roon v2 (Version 2.0)

Adjust Opus Sequences in Title for Roon v2 is an updated version of the previous action. You can delete the old one. The new one only modifies Work ... not Title.

Correct Missing : in Classical Title tries to properly replace - with :

Attempt to Fix Title for Classical calls them both in the correct order.

Have fun.

Yah there is no perfect way tp correct malformed metadata. Even looking for the first - after Op. would not work as some pieces have parts but no Opus metadata 🙁