======================== unified (from filesystem) ========================
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                                        'duration'  '224'
                                          'artist'  'David Bowie'
                                     'text_people'  'David Bowie'
                                         'release'  'Bowie At The Beeb [Disc 3] '
                                           'title'  'This Is Not America'
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                                      'lastfmtags'  "['classic rock', '80s', 'alternative', 'rock', 'glam rock']"
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                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
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======================== rawer (from filesystem) ========================

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'TCOM' (Composer)                                   'David Bowie'
'TCON' (Content type, a.k.a. Genre)                 ['ifs-songwriter-eos', 'set-pl-sced']
'TDRC' (Recording time)                             '2000-01-01'
'TIT2' (Title/songname/content description)         'This Is Not America'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'David Bowie'
'TPE2' (Band/orchestra/accompaniment)               'David Bowie'
'TRCK' (Track number/Position in set)               '4'
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'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['classic rock', '80s', 'alternative', 'rock', 'glam rock']
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'TXXX:q-chart'                                      '4'
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'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
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========================== row from database ==========================
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                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/David Bowie/[2000] Bowie At The Beeb [Disc 3]/04 This Is Not America.mp3
                                         'working'  None
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                                    'duration_sec'  224
                                           'genre'  ifs-songwriter-eos;set-pl-sced
                                        'filesize'  7262355
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                                     'tag_release'  Bowie At The Beeb [Disc 3] 
                                       'tag_title'  This Is Not America
                                             'bpm'  116.386
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                                    'tag_tracknum'  4
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                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-1', 'q-chart-4', 'q-other-2', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['classic rock', '80s', 'alternative', 'rock', 'glam rock']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636400818.9125535  (2021-11-08 20:46:58)
                             'size'  7262355