======================== unified (from filesystem) ========================
                                         'bitrate'  '231.982'
                                        'duration'  '365'
                                          'artist'  'Metallica'
                                     'text_people'  ''
                                         'release'  'Reload'
                                           'title'  'Prince Charming'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-4', 'q-play-2', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['hard rock', 'rock', 'thrash metal', 'metal', 'heavy metal']"
                                     'discogstags'  "['rock', 'hard rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '6'
                                            'date'  '1997'
                                        'comments'  ''
                                           'genre'  'eid-metal-trash'
                                             'bpm'  '100'
                                             'key'  '4A'
                                        'acoustid'  'cb5d0bb4-22d8-4c11-8a50-3c6362d6dc98'
rest: ''

======================== rawer (from filesystem) ========================

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Reload'
'TBPM' (BPM (beats per minute))                     '100'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-trash'
'TDOR' (Original release time)                      '1997'
'TDRC' (Recording time)                             '1997-11-18'
'TIPL' (Involved people list)                       TIPL(encoding=<Encoding.UTF16: 1>, people=[['additional percussion', 'Jim McGillveray']])
'TIT2' (Title/songname/content description)         'Prince Charming'
'TKEY' (Initial key)                                '4A'
'TMED' (Media type)                                 '12" Vinyl'
'TPE1' (Lead performer(s)/Soloist(s))               'Metallica'
'TPE2' (Band/orchestra/accompaniment)               'Metallica'
'TPOS' (Part of a set)                              '2/2'
'TPUB' (Publisher)                                  'Elektra Entertainment'
'TRCK' (Track number/Position in set)               '3/6'
'TSO2'                                              'Metallica'
'TSOP' (Performer sort order)                       'Metallica'
'TSRC' (ISRC (international standard recording code))  'GBAMC9700013/USEV19719682'
'TXXX:ASIN'                                         'B000005ITQ'
'TXXX:Acoustid Id'                                  'cb5d0bb4-22d8-4c11-8a50-3c6362d6dc98'
'TXXX:Artists'                                      'Metallica'
'TXXX:BARCODE'                                      '075596212618'
'TXXX:CATALOGNUMBER'                                '62126-1'
'TXXX:MusicBrainz Album Artist Id'                  '65f4f0c5-ef9e-490c-aee3-909e7ae6b2ab'
'TXXX:MusicBrainz Album Id'                         'b93dd30c-f94b-49c9-b3c1-69298cea52c2'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '65f4f0c5-ef9e-490c-aee3-909e7ae6b2ab'
'TXXX:MusicBrainz Release Group Id'                 '8fd32554-02a7-3788-a761-7012e0e75e55'
'TXXX:MusicBrainz Release Track Id'                 'c8aa35ed-a325-3066-8c54-ac266a79fc89'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['rock', 'hard rock']
'TXXX:lastfmtags'                                   ['hard rock', 'rock', 'thrash metal', 'metal', 'heavy metal']
'TXXX:originalyear'                                 '1997'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.89 dB'
'TXXX:replaygain_track_peak'                        '0.501579'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'33014c74-a757-4dde-ab37-1fcf72279437')

========================== row from database ==========================
                                              'id'  1293524
                                            'path'  /data/Music/Bulk/00poprockelectronic/Metallica/Reload/10 Prince Charming.wma.mp3
                                         'working'  None
                                         'bitrate'  231
                                    'duration_sec'  365
                                           'genre'  eid-metal-trash
                                        'filesize'  10663059
                                           'mtime'  1620311735
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 10 Charming.wma eid metal trash
                                      'tag_artist'  Metallica
                                     'tag_release'  Reload
                                       'tag_title'  Prince Charming
                                             'bpm'  100.0
                                    'search_title'  'charming':2 'prince':1
                                   'search_artist'  'metallica':1
                                  'search_release'  'reload':1
                                     'search_rest'  '00poprockelectronic':1 'charming':2 'charmingwma':4 'eid':5 'metal':6 'trash':7 'wma':3
                                    'search_combo'  '00poprockelectronic':5 'charming':2A,6 'charmingwma':8 'eid':9 'metal':10 'metallica':3B 'prince':1A 'reload':4C 'trash':11 'wma':7
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-1', 'q-bass-3', 'q-grit-4']
                                      'lastfmtags'  ['hard rock', 'rock', 'thrash metal', 'metal', 'heavy metal']
                                        'tag_date'  1997
                                     'discogstags'  ['rock', 'hard rock']

============================== file details ==============================
                                           'mtime'  1620311734.9061816  (2021-05-06 16:35:34)
                             'size'  10663059