======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '144'
                                          'artist'  'Tegan and Sara'
                                     'text_people'  ''
                                         'release'  'The Con'
                                           'title'  'Burn Your Life Down'
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                                      'lastfmtags'  "['indie', 'indie pop', 'alternative', 'female vocalists', 'canadian']"
                                     'discogstags'  "['rock', 'folk rock', 'indie rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '2007'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-indie-unsorted'
                                             'bpm'  '124.468'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Con'
'TBPM' (BPM (beats per minute))                     '124.468'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-indie-unsorted'
'TDRC' (Recording time)                             '2007'
'TIT2' (Title/songname/content description)         'Burn Your Life Down'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Tegan and Sara'
'TRCK' (Track number/Position in set)               '9'
'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 rock', 'indie rock']
'TXXX:lastfmtags'                                   ['indie', 'indie pop', 'alternative', 'female vocalists', 'canadian']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.12 dB'
'TXXX:replaygain_track_peak'                        '0.455583'

========================== row from database ==========================
                                              'id'  1318563
                                            'path'  /data/Music/Bulk/00poprockelectronic/Tegan and Sara/The Con/9.  burn your life down.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  144
                                           'genre'  ifs-songwriter-indie-unsorted
                                        'filesize'  3462844
                                           'mtime'  1636402033
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 9. burn your life down ifs songwriter indie unsorted
                                      'tag_artist'  Tegan and Sara
                                     'tag_release'  The Con
                                       'tag_title'  Burn Your Life Down
                                             'bpm'  124.468
                                    'search_title'  'burn':1 'down':4 'life':3 'your':2
                                   'search_artist'  'and':2 'sara':3 'tegan':1
                                  'search_release'  'con':2 'the':1
                                     'search_rest'  '00poprockelectronic':1 '9':2,3 'burn':4 'down':7 'ifs':8 'indie':10 'life':6 'songwriter':9 'unsorted':11 'your':5
                                    'search_combo'  '00poprockelectronic':10 '9':11,12 'and':6B 'burn':1A,13 'con':9C 'down':4A,16 'ifs':17 'indie':19 'life':3A,15 'sara':7B 'songwriter':18 'tegan':5B 'the':8C 'unsorted':20 'your':2A,14
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'indie pop', 'alternative', 'female vocalists', 'canadian']
                                        'tag_date'  2007
                                     'discogstags'  ['rock', 'folk rock', 'indie rock']

============================== file details ==============================
                                           'mtime'  1636402033.0941098  (2021-11-08 21:07:13)
                             'size'  3462844