Well. If you can find it on MusicBrainz, you can click the 'tagger' icon and get it 'imported' into Picard that way. (Though to get that icon I think you have to get to MB via Picard in the first place.)
2011-04-01 09107, 2011
creature
If not, you can add it (Taking note of the Classical Style Guide, obviously), and then tag your files.
2011-04-01 09102, 2011
konr
will the musicbrainz_trackid and related tags be generated?