This app was mentioned in 10 comments, with an average of 1.10 upvotes
Hmmm higher rating than Audio Tagger, but lower rating than Automatic Tag Editor, both of which I already own. ��
I could find some app on playstore that mentioned " Batch rename files from tag keywords and the other way round." https://play.google.com/store/apps/details?id=com.ftpcafe.tagger.trial&hl=en
Maybe you can give it a try.
Audio tagger should do this. https://play.google.com/store/apps/details?id=com.ftpcafe.tagger.trial
I don't know if piracy is supported here but I use this to edit music tags
I found and app that seems to be what are you looking for: AudioTagger.
Use this. I had the exact issue as you did.
https://play.google.com/store/apps/details?id=com.ftpcafe.tagger.trial
Fixed it in ten seconds