Is there any clever way to create a string that will detect multiple artists for an album and then automatically add the metadata "Various Artists" to the Album Artist Field and "Compilation=1"? I have a very large library and quite a few albums have several artists. If I have a compilation, such …

If you really have multivalue-fields you can filter for these files: "$meta_sep(Artist,\\)" HAS \\ Then apply an action group with 2 actions for these filtered files: Format value: Field: ALBUMARTIST Format String: Various Artists Field: COMPILATION Format String: 1

[image] Lodum007: that will detect multiple artists for an album MP3tag does not compare data between files. So any detection has to rely on data that can be compared looking at a single file at a time. So: How does the path look like? Do you have the name of the ALBUMARTIST in the path so…

Thank you. I tried filtering as follows with various compilations loaded up in Mp3tag: "$meta_sep(Artist,\)" HAS \ Unfortunately, nothing showed up after filtering with those values. Here is a photo of the path and then the metadata info for one of these typical albums: [Compilation Example1] …

[image] Lodum007: Unfortunately, nothing showed up after filtering with those values. My suggestion was for the case that you have multiple artists in 1 file (multivalue tags). I think I misunderstood your wish. What you obviously want is to filter for albums with different artists. You sho…

This is just a rough idea: First move all files of the same ALBUM to a common folder with Converter>Tag-Tag for _DIRECTORY with an absolute path, e.g. Format string: z:%album% Now, the common folder can be used as a data storage. So rename the folder again but this time to add further informatio…

Thank you both for your good suggestions. I'll work on this now that I understand more about the possibilities/limitations of what can be done. Very appreciated.

[image] Lodum007: Thank you. I tried filtering as follows with various compilations loaded up in Mp3tag: "$meta_sep(Artist,)" HAS \ This only works if the Artist tag has a backslash, I don't see that in the tags in your example. You mentioned in your first post that you would need to add the…

Thanks. Most of my albums with multiple artists do not have the COMPILATION = 1 flag. What these multiple artist albums have in common is that they have the same exact ALBUM tag in the metadata, such as "Grammys 2003". These albums also have the same exact name in the folder structure. If there …

[image] Lodum007: If there was a way to filter to only show all albums that have different artist tags MP3tag does not know anything about albums. So there is no way to filter for criteria that can only be evaluated if you compare 2 files with each other. That is why I suggested to add one …

@ohrenkino 's is a good solution, based on the limited data in the fields currently being used. But there are some possible issues of albums that may have identical names you will have to deal with, especially ones like "Greatest Hits" or similar. You mentioned you have a rather large library - I do…

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