======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '372'
                                          'artist'  'Add N to (X)'
                                     'text_people'  ''
                                         'release'  'Avant Hard'
                                           'title'  'Revenge of the Black Regent'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['electronica', 'electroclash', 'electronic', 'electro', 'experimental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'electronic-experimental'
                                             'bpm'  '102.696'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Avant Hard'
'TBPM' (BPM (beats per minute))                     '102.696'
'TCON' (Content type, a.k.a. Genre)                 'electronic-experimental'
'TDRC' (Recording time)                             '1999'
'TIT2' (Title/songname/content description)         'Revenge of the Black Regent'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Add N to (X)'
'TRCK' (Track number/Position in set)               '7'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['electronica', 'electroclash', 'electronic', 'electro', 'experimental']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.14 dB'
'TXXX:replaygain_track_peak'                        '0.402576'

========================== row from database ==========================
                                              'id'  135451
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Add N To (X)/Avant Hard/07 Revenge Of The Black Regent.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  372
                                           'genre'  electronic-experimental
                                        'filesize'  8946227
                                           'mtime'  1623408900
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm To 07 Of The electronic experimental
                                      'tag_artist'  Add N to (X)
                                     'tag_release'  Avant Hard
                                       'tag_title'  Revenge of the Black Regent
                                             'bpm'  102.696
                                    'search_title'  'black':4 'of':2 'regent':5 'revenge':1 'the':3
                                   'search_artist'  'add':1 'n':2 'to':3 'x':4,5
                                  'search_release'  'avant':1 'hard':2
                                     'search_rest'  'electronic':4 'experimental':5 'of':2 'the':3 'to':1
                                    'search_combo'  'add':6B 'avant':11C 'black':4A 'electronic':16 'experimental':17 'hard':12C 'n':7B 'of':2A,14 'regent':5A 'revenge':1A 'the':3A,15 'to':8B,13 'x':9B,10B
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'electroclash', 'electronic', 'electro', 'experimental']
                                        'tag_date'  1999
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1623408900.3051403  (2021-06-11 12:55:00)
                             'size'  8946227