I'm extremely surprised that I haven't been able to find a previous request for this...  Please excuse if this is a duplicate in any case.

Please consider adding support for the Track Language ID3v2 tag, TLAN, to both the database as well as the UI, including displaying its aggregated contents when viewing information about an Album or track as well as providing it as a search field in advanced search.

Some people have used the Genre tag to include a track's language but that's not really appropriate nor easily managed when doing searches for very specific content.

I currently have a large number of tracks in languages other than English. It would be extremely convenient to be able to easily find some or all of those tracks by their language tags.