The Track Web API provides a lot of useful information and more can even be retrieved from the Get Audio Analysis endpoint. A track additionally has a lot of metadata flags such as the explicit flag but there is no language attribute on the track object. Would it be possible to expose a track's language so that apps/extensions can be used to leverage this?

Use cases such as:

- Prevent the playing of any songs not in a preferred language

- Creating Playlists based on language

- Getting better recommendations based on language

If language isn't something that doesn't yet exist in the track API then this is very easy to backfill using NLP models. Google Translate has an autodetect language feature which showcases this. An implementation for fixing bad language labels could also be available for users and could be regulated based on amount of reports for the same language for example. 

It would be a really nice feature and l know I would personally benefit from this because if there is one thing that grinds my gears, it is getting songs with languages I don't even speak in my Discover Weekly! 🙂