======================== unified (from filesystem) ========================
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                                        'duration'  '159'
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                                      'lastfmtags'  "['rnb', 'blues', 'rhythm and blues', 'soul', '50s']"
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                                      'tracktotal'  '14'
                                            'date'  '1998'
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                                             'bpm'  '132'
                                             'key'  '3A'
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rest: ''

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

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'TDOR' (Original release time)                      '1998'
'TDRC' (Recording time)                             '1998'
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'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Little Willie John'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '10/14'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'John, Little Willie'
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'TXXX:Artists'                                      'Little Willie John'
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'TXXX:originalyear'                                 '1998'
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'TXXX:q-busy'                                       '3'
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'TXXX:q-grit'                                       '2'
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'TXXX:replaygain_track_gain'                        '+3.18 dB'
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========================== row from database ==========================
                                              'id'  1417122
                                            'path'  /data/Music/Bulk/00popandrock-punk-garage-surf-stoner/va - Born Bad Vol. 2/10 Fever.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  159
                                           'genre'  rock-gr-garage
                                        'filesize'  3274765
                                           'mtime'  1620388626
                                   'redo_metaread'  0
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                                     'tag_release'  Born Bad, Volume 2
                                       'tag_title'  Fever
                                             'bpm'  132.0
                                    'search_title'  'fever':1
                                   'search_artist'  'john':3 'little':1 'willie':2
                                  'search_release'  '2':5 'bad':2,3 'born':1 'volume':4
                                     'search_rest'  'garage':2 'gr':9 'punk':1 'rock':8 'stoner':4 'surf':3 'va':5 'vol':6,7
                                    'search_combo'  '2':9C 'bad':6C,7C 'born':5C 'fever':1A 'garage':11 'gr':18 'john':4B 'little':2B 'punk':10 'rock':17 'stoner':13 'surf':12 'va':14 'vol':15,16 'volume':8C 'willie':3B
                                    'tag_tracknum'  10
                                      'num_images'  1
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-1', 'q-other-1', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['rnb', 'blues', 'rhythm and blues', 'soul', '50s']
                                        'tag_date'  1998
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620388626.3400328  (2021-05-07 13:57:06)
                             'size'  3274765