======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '516'
                                          'artist'  'Metallica'
                                     'text_people'  ''
                                         'release'  'Master of Puppets'
                                           'title'  'Master of Puppets'
                                           '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-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['hard rock', 'rock', 'thrash metal', 'metal', 'heavy metal']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '8'
                                            'date'  '1988'
                                        'comments'  ''
                                           'genre'  'eid-metal-trash'
                                             'bpm'  '105'
                                             'key'  '8A'
                                        'acoustid'  'c2d7307b-087b-49cf-a0ba-35c5a210c605'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Master of Puppets'
'TBPM' (BPM (beats per minute))                     '105'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-trash'
'TDOR' (Original release time)                      '1986'
'TDRC' (Recording time)                             '1988-09-30'
'TENC' (Encoded by)                                 'MP3Producer by MP3Developments.com'
'TIT2' (Title/songname/content description)         'Master of Puppets'
'TKEY' (Initial key)                                '8A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Metallica'
'TPE2' (Band/orchestra/accompaniment)               'Metallica'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'CBS/Sony'
'TRCK' (Track number/Position in set)               '2/8'
'TSO2'                                              'Metallica'
'TSOP' (Performer sort order)                       'Metallica'
'TSRC' (ISRC (international standard recording code))  'GBAMC8600001'
'TXXX:ASIN'                                         'B00000724U'
'TXXX:Acoustid Id'                                  'c2d7307b-087b-49cf-a0ba-35c5a210c605'
'TXXX:Artists'                                      'Metallica'
'TXXX:BARCODE'                                      '4988009619156'
'TXXX:CATALOGNUMBER'                                '25DP 5234'
'TXXX:MusicBrainz Album Artist Id'                  '65f4f0c5-ef9e-490c-aee3-909e7ae6b2ab'
'TXXX:MusicBrainz Album Id'                         '1f87ac3f-ed28-3dfa-b54d-c778a8711931'
'TXXX:MusicBrainz Album Release Country'            'JP'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '65f4f0c5-ef9e-490c-aee3-909e7ae6b2ab'
'TXXX:MusicBrainz Release Group Id'                 '3d00fb45-f8ab-3436-a8e1-b4bfc4d66913'
'TXXX:MusicBrainz Release Track Id'                 '8fb4154d-bac7-3bb8-839d-1a16874369fe'
'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'                                   ['hard rock', 'rock', 'thrash metal', 'metal', 'heavy metal']
'TXXX:originalyear'                                 '1986'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.50 dB'
'TXXX:replaygain_track_peak'                        '0.455805'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'0151d8a4-50c8-4036-b824-4a4f4b140e8e')

========================== row from database ==========================
                                              'id'  1337145
                                            'path'  /data/Music/Bulk/00poprockelectronic/Metallica/Master Of Puppets/Metallica Master of Puppets 02 Master of Puppets.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  516
                                           'genre'  eid-metal-trash
                                        'filesize'  12487886
                                           'mtime'  1620311707
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Of 02 eid metal trash
                                      'tag_artist'  Metallica
                                     'tag_release'  Master of Puppets
                                       'tag_title'  Master of Puppets
                                             'bpm'  105.0
                                    'search_title'  'master':1 'of':2 'puppets':3
                                   'search_artist'  'metallica':1
                                  'search_release'  'master':1 'of':2 'puppets':3
                                     'search_rest'  '00poprockelectronic':1 'eid':3 'metal':4 'of':2 'trash':5
                                    'search_combo'  '00poprockelectronic':8 'eid':10 'master':1A,5C 'metal':11 'metallica':4B 'of':2A,6C,9 'puppets':3A,7C 'trash':12
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-4', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-1', 'q-bass-2', 'q-grit-4']
                                      'lastfmtags'  ['hard rock', 'rock', 'thrash metal', 'metal', 'heavy metal']
                                        'tag_date'  1988
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620311707.3649428  (2021-05-06 16:35:07)
                             'size'  12487886