======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '186'
                                          'artist'  'The Tallest Man On Earth'
                                     'text_people'  ''
                                         'release'  'Shallow Grave'
                                           'title'  'The Sparrow And The Medicine'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
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 "'q-chart-3', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
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                                      'lastfmtags'  "['swedish', 'acoustic', 'indie', 'folk', 'singer songwriter']"
                                     'discogstags'  "['rock', 'folk rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  '2008'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '121.555'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

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'TBPM' (BPM (beats per minute))                     '121.555'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '2008'
'TIT2' (Title/songname/content description)         'The Sparrow And The Medicine'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Tallest Man On Earth'
'TRCK' (Track number/Position in set)               '8'
'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']
'TXXX:lastfmtags'                                   ['swedish', 'acoustic', 'indie', 'folk', 'singer songwriter']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.37 dB'
'TXXX:replaygain_track_peak'                        '0.250153'

========================== row from database ==========================
                                              'id'  1276217
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/The Tallest Man On Earth/Shallow Graves/08 the sparrow and the medicine.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  186
                                           'genre'  ifs-songwriter
                                        'filesize'  7454473
                                           'mtime'  1637330582
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos Graves 08 the sparrow and the medicine ifs songwriter
                                      'tag_artist'  The Tallest Man On Earth
                                     'tag_release'  Shallow Grave
                                       'tag_title'  The Sparrow And The Medicine
                                             'bpm'  121.555
                                    'search_title'  'and':3 'medicine':4 'sparrow':2 'the':1
                                   'search_artist'  'earth':5 'man':3 'on':4 'tallest':2 'the':1
                                  'search_release'  'grave':2 'shallow':1
                                     'search_rest'  '00singer':1 'and':7 'eos':3 'graves':4 'ifs':9 'medicine':8 'songwriter':2 'sparrow':6 'the':5
                                    'search_combo'  '00singer':12 'and':3A,18 'earth':9B 'eos':14 'grave':11C 'graves':15 'ifs':20 'man':7B 'medicine':4A,19 'on':8B 'shallow':10C 'songwriter':13 'sparrow':2A,17 'tallest':6B 'the':1A,5B,16
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['swedish', 'acoustic', 'indie', 'folk', 'singer songwriter']
                                        'tag_date'  2008
                                     'discogstags'  ['rock', 'folk rock']

============================== file details ==============================
                                           'mtime'  1637330582.162408  (2021-11-19 15:03:02)
                             'size'  7454473