======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '499'
                                          'artist'  'Trembling Strain'
                                     'text_people'  ''
                                         'release'  'Anthem To Raise The Dead'
                                           'title'  'Funeral March'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-3', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['avant folk', 'ritual folk', 'avant garde', 'funeral folk', 'sound collage']"
                                     'discogstags'  ("['folk, world, & country', 'abstract', 'electronic', 'experimental', "
 "'ambient']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '01'
                                      'tracktotal'  '9'
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'electronic-ambient-dark'
                                             'bpm'  '86.2'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         'EAC V1.0 beta 2, Secure Mode, Test & Copy, AccurateRip, FLAC -8'
'TALB' (Album/Movie/Show title)                     'Anthem To Raise The Dead'
'TBPM' (BPM (beats per minute))                     '86.2'
'TCON' (Content type, a.k.a. Genre)                 'electronic-ambient-dark'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'Funeral March'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Trembling Strain'
'TPE2' (Band/orchestra/accompaniment)               'Trembling Strain'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '01/9'
'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:discogstags'                                  ['folk, world, & country', 'abstract', 'electronic', 'experimental', 'ambient']
'TXXX:lastfmtags'                                   ['avant folk', 'ritual folk', 'avant garde', 'funeral folk', 'sound collage']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+4.97 dB'
'TXXX:replaygain_track_peak'                        '0.952656'

========================== row from database ==========================
                                              'id'  444924
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Bad Sector/Funeral March.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  499
                                           'genre'  electronic-ambient-dark
                                        'filesize'  19966317
                                           'mtime'  1636909894
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Bad Sector electronic ambient dark
                                      'tag_artist'  Trembling Strain
                                     'tag_release'  Anthem To Raise The Dead
                                       'tag_title'  Funeral March
                                             'bpm'  86.2
                                    'search_title'  'funeral':1 'march':2
                                   'search_artist'  'strain':2 'trembling':1
                                  'search_release'  'anthem':1 'dead':5 'raise':3 'the':4 'to':2
                                     'search_rest'  'ambient':4 'bad':1 'dark':5 'electronic':3 'sector':2
                                    'search_combo'  'ambient':13 'anthem':5C 'bad':10 'dark':14 'dead':9C 'electronic':12 'funeral':1A 'march':2A 'raise':7C 'sector':11 'strain':4B 'the':8C 'to':6C 'trembling':3B
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['avant folk', 'ritual folk', 'avant garde', 'funeral folk', 'sound collage']
                                        'tag_date'  1995
                                     'discogstags'  ['folk, world, & country', 'abstract', 'electronic', 'experimental', 'ambient']

============================== file details ==============================
                                           'mtime'  1636909893.6508272  (2021-11-14 18:11:33)
                             'size'  19966317