======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '284'
                                          'artist'  'Pantera'
                                     'text_people'  ''
                                         'release'  'The Great Southern Trendkill'
                                           'title'  'Suicide Note, Part I'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-4', 'q-play-2', "
 "'q-chart-4', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['heavy metal', 'power metal', 'thrash metal', 'metal', 'groove metal']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  '11'
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'eid-metal-trash'
                                             'bpm'  '125.3'
                                             'key'  '10B'
                                        'acoustid'  'a0868fb7-ffdc-4788-b156-7193dfc53887'
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Great Southern Trendkill'
'TBPM' (BPM (beats per minute))                     '125.3'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-trash'
'TDOR' (Original release time)                      '1996'
'TDRC' (Recording time)                             '1996'
'TIT2' (Title/songname/content description)         'Suicide Note, Part I'
'TKEY' (Initial key)                                '10B'
'TLEN' (Length)                                     '284656'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Pantera'
'TPE2' (Band/orchestra/accompaniment)               'Pantera'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'EastWest Records America'
'TRCK' (Track number/Position in set)               '6/11'
'TSO2'                                              'Pantera'
'TSOP' (Performer sort order)                       'Pantera'
'TSRC' (ISRC (international standard recording code))  'USEW29600006'
'TXXX:Acoustid Id'                                  'a0868fb7-ffdc-4788-b156-7193dfc53887'
'TXXX:BARCODE'                                      '6001491365221'
'TXXX:CATALOGNUMBER'                                'EWCD 6'
'TXXX:MusicBrainz Album Artist Id'                  '541f16f5-ad7a-428e-af89-9fa1b16d3c9c'
'TXXX:MusicBrainz Album Id'                         '75a1e41f-88c4-35bf-b9f6-d471d5a44527'
'TXXX:MusicBrainz Album Release Country'            'ZA'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '541f16f5-ad7a-428e-af89-9fa1b16d3c9c'
'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'
'TXXX:lastfmtags'                                   ['heavy metal', 'power metal', 'thrash metal', 'metal', 'groove metal']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.12 dB'
'TXXX:replaygain_track_peak'                        '0.667348'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'6467ca0d-6558-456a-b57a-0da1041f46a9')

========================== row from database ==========================
                                              'id'  1400979
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Pantera/The Great Southern Trendkill/Pantera - Suicide Note Pt. I - 06.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  284
                                           'genre'  eid-metal-trash
                                        'filesize'  4556672
                                           'mtime'  1620311618
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal Pt. 06 eid metal trash
                                      'tag_artist'  Pantera
                                     'tag_release'  The Great Southern Trendkill
                                       'tag_title'  Suicide Note, Part I
                                             'bpm'  125.3
                                    'search_title'  'i':5 'note':2,3 'part':4 'suicide':1
                                   'search_artist'  'pantera':1
                                  'search_release'  'great':2 'southern':3 'the':1 'trendkill':4
                                     'search_rest'  '00dwimp':1 '00metal':2 'eid':5 'metal':6 'pt':3,4 'trash':7
                                    'search_combo'  '00dwimp':11 '00metal':12 'eid':15 'great':8C 'i':5A 'metal':16 'note':2A,3A 'pantera':6B 'part':4A 'pt':13,14 'southern':9C 'suicide':1A 'the':7C 'trash':17 'trendkill':10C
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-2', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-1', 'q-bass-2', 'q-grit-4']
                                      'lastfmtags'  ['heavy metal', 'power metal', 'thrash metal', 'metal', 'groove metal']
                                        'tag_date'  1996
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620311618.3520448  (2021-05-06 16:33:38)
                             'size'  4556672