======================== unified (from filesystem) ========================
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                                        'duration'  '1042'
                                          'artist'  'H.P. Lovecraft'
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                                         'release'  'Short Horror Stories'
                                           'title'  'The Doom That Came To Sarnath'
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                                      'lastfmtags'  "['story', 'author', 'audiobook', 'book', 'psychedelic rock', 'psychedelic']"
                                     'discogstags'  "['non-music']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '10'
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'nonmusic-speech-comedy or drama'
                                             'bpm'  '140.823'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'Short Horror Stories'
'TBPM' (BPM (beats per minute))                     '140.823'
'TCON' (Content type, a.k.a. Genre)                 'nonmusic-speech-comedy or drama'
'TDRC' (Recording time)                             '2006'
'TIT2' (Title/songname/content description)         'The Doom That Came To Sarnath'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'H.P. Lovecraft'
'TRCK' (Track number/Position in set)               '3/10'
'TXXX:Q-HAP'                                        '2'
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'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'non-music'
'TXXX:lastfmtags'                                   ['story', 'author', 'audiobook', 'book', 'psychedelic rock', 'psychedelic']
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'TXXX:q-drums'                                      '1'
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'TXXX:q-mixbeat'                                    '1'
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'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+5.44 dB'
'TXXX:replaygain_track_peak'                        '0.873130'

========================== row from database ==========================
                                              'id'  769303
                                            'path'  /data/Music/Bulk/0nonmusic/Short Horror Stories/03 The Doom That Came To Sarnath.mp3
                                         'working'  None
                                         'bitrate'  56
                                    'duration_sec'  1042
                                           'genre'  nonmusic-speech-comedy or drama
                                        'filesize'  7581704
                                           'mtime'  1621853460
                                   'redo_metaread'  0
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                                      'tag_artist'  H.P. Lovecraft
                                     'tag_release'  Short Horror Stories
                                       'tag_title'  The Doom That Came To Sarnath
                                             'bpm'  140.823
                                    'search_title'  'came':4 'doom':2 'sarnath':6 'that':3 'the':1 'to':5
                                   'search_artist'  'h':1 'hp':3 'lovecraft':4 'p':2
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                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-1', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['story', 'author', 'audiobook', 'book', 'psychedelic rock', 'psychedelic']
                                        'tag_date'  2006
                                     'discogstags'  ['non-music']

============================== file details ==============================
                                           'mtime'  1621853460.4965203  (2021-05-24 12:51:00)
                             'size'  7581704