======================== unified (from filesystem) ========================
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                                        'duration'  '168'
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                                      'lastfmtags'  "['rockabilly', 'oldies', 'classic rock', 'country', 'blues']"
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                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
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                                      'tracktotal'  '14'
                                            'date'  '1998'
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                                             'bpm'  '105'
                                             'key'  '8A'
                                        'acoustid'  '93b5a6af-f0d7-4510-81a3-c85c49a10f08'
rest: ''

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'TDOR' (Original release time)                      '1998'
'TDRC' (Recording time)                             '1998'
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'TKEY' (Initial key)                                '8A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Dave Diddle Day'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '12/14'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Dave Diddle Day'
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'TXXX:Acoustid Id'                                  '93b5a6af-f0d7-4510-81a3-c85c49a10f08'
'TXXX:Artists'                                      'Dave Diddle Day'
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'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
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========================== row from database ==========================
                                              'id'  1418791
                                            'path'  /data/Music/Bulk/00popandrock-punk-garage-surf-stoner/va - Born Bad Vol. 2/12 Blue Moon Baby.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  168
                                           'genre'  rock-gr-garage
                                        'filesize'  3460415
                                           'mtime'  1620388626
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock punk garage surf stoner va Vol. 12 rock gr garage
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                                     'tag_release'  Born Bad, Volume 2
                                       'tag_title'  Blue Moon Baby
                                             'bpm'  105.0
                                    'search_title'  'baby':3 'blue':1 'moon':2
                                   'search_artist'  'dave':1 'day':3 'diddle':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':11C 'baby':3A 'bad':8C,9C 'blue':1A 'born':7C 'dave':4B 'day':6B 'diddle':5B 'garage':13 'gr':20 'moon':2A 'punk':12 'rock':19 'stoner':15 'surf':14 'va':16 'vol':17,18 'volume':10C
                                    'tag_tracknum'  12
                                      'num_images'  1
                                             'key'  8A
                                           '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-4', 'q-syn-2', 'q-chart-1', 'q-other-2', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['rockabilly', 'oldies', 'classic rock', 'country', 'blues']
                                        'tag_date'  1998
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620388626.3672347  (2021-05-07 13:57:06)
                             'size'  3460415