======================== unified (from filesystem) ========================
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                                        'duration'  '322'
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                            'musicbrainz_artistid'  ''
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                                     'tracknumber'  '04'
                                      'tracktotal'  ''
                                            'date'  '2016'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-indie-unsorted'
                                             'bpm'  '121.191'
                                             'key'  '7B'
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rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
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'TBPM' (BPM (beats per minute))                     '121.191'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-indie-unsorted'
'TDRC' (Recording time)                             '2016'
'TIT2' (Title/songname/content description)         'The Wolves (Act I And II)'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'Bon Iver'
'TRCK' (Track number/Position in set)               '04'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'folk, world, & country', 'acoustic']
'TXXX:lastfmtags'                                   ['indie', 'acoustic', 'lo fi', 'folk', 'singer songwriter']
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'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.67 dB'
'TXXX:replaygain_track_peak'                        '0.701451'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'ca11bdb5-c3df-4bbe-b6c2-f1acf81d5c2c')

========================== row from database ==========================
                                              'id'  1251826
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Bon Iver/For Emma, Forever Ago/04 the wolves (act i and ii).mp3
                                         'working'  None
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                                    'duration_sec'  322
                                           'genre'  ifs-songwriter-indie-unsorted
                                        'filesize'  8766993
                                           'mtime'  1637950042
                                   'redo_metaread'  0
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                                      'tag_artist'  Bon Iver
                                     'tag_release'  For Emma, Forever Ago
                                       'tag_title'  The Wolves (Act I And II)
                                             'bpm'  121.191
                                    'search_title'  'act':3,4 'and':6 'i':5 'ii':7,8 'the':1 'wolves':2
                                   'search_artist'  'bon':1 'iver':2
                                  'search_release'  'ago':5 'emma':2,3 'for':1 'forever':4
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                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-2', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['indie', 'acoustic', 'lo fi', 'folk', 'singer songwriter']
                                        'tag_date'  2016
                                     'discogstags'  ['rock', 'folk, world, & country', 'acoustic']

============================== file details ==============================
                                           'mtime'  1637950042.3928275  (2021-11-26 19:07:22)
                             'size'  8766993