Where does Acousticbrainz store it's data?

I use MediaInfo (macOS) to view info contained in audio files.

With it I can see that BMP and Initial Key are added when using Acousticbrainz but all other fields like danceable are invisible (with that app anyway).

I know this info is being added because if I search for

beet list danceable:0.5 

Beet shows me a list of files that conform to this query.

How would a be able to get insight in which information is available in a file?
Is there a terminal command for this?
Or another open source audio review app?

Thanks, Jan

You might consider the info plugin, which can show you all the metadata for a given item.