I scanned three prominent Dead Kennedys albums – after confirming the tags and discography were accurate on the database(s) you use.

My tags of course were wrong. That's the point.

What you returned was even more wrong.

I then erased all tags to see if perhaps your system was "cheating" by relying too heavily on file names rather than audio fingerprinting.

I got much better results. But still significantly wrong.

And your system did not add any album art.

This is a nifty idea which appears to not live up at all to its promise.