======================== unified (from filesystem) ========================
                                         'bitrate'  '166.937'
                                        'duration'  '109'
                                          'artist'  'Deadlock'
                                     'text_people'  ''
                                         'release'  'Earth.Revolt'
                                           'title'  'Harmonic'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-LOCALNESS-2', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'Q-PLAY-2', 'q-bass-1', 'q-busy-4', 'q-grit-4', "
 "'Q-PIANO-4', 'q-chart-2', 'q-drums-1', 'q-other-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['female fronted metal', 'german', 'metal', 'death metal', 'metalcore', "
 "'melodic death metal']")
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'eid-metal-death'
                                             'bpm'  '140.8'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Earth.Revolt'
'TBPM' (BPM (beats per minute))                     '140.8'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-death'
'TDRC' (Recording time)                             '2005'
'TENC' (Encoded by)                                 'EAC 0.95'
'TIT2' (Title/songname/content description)         'Harmonic'
'TKEY' (Initial key)                                '8B'
'TLAN' (Language(s))                                'German'
'TPE1' (Lead performer(s)/Soloist(s))               'Deadlock'
'TRCK' (Track number/Position in set)               '10'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['female fronted metal',
 'german',
 'metal',
 'death metal',
 'metalcore',
 'melodic death metal']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '4'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.11 dB'
'TXXX:replaygain_track_peak'                        '0.430121'

========================== row from database ==========================
                                              'id'  1392861
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Deadlock/Earth.Revolt/10_harmonic-cmg.mp3
                                         'working'  None
                                         'bitrate'  167
                                    'duration_sec'  109
                                           'genre'  eid-metal-death
                                        'filesize'  2298842
                                           'mtime'  1620301886
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal 10_harmonic cmg eid metal death
                                      'tag_artist'  Deadlock
                                     'tag_release'  Earth.Revolt
                                       'tag_title'  Harmonic
                                             'bpm'  140.8
                                    'search_title'  'harmonic':1
                                   'search_artist'  'deadlock':1
                                  'search_release'  'earth':1 'earthrevolt':3 'revolt':2
                                     'search_rest'  '00dwimp':1 '00metal':2 '10':3 'cmg':5 'death':8 'eid':6 'harmonic':4 'metal':7
                                    'search_combo'  '00dwimp':6 '00metal':7 '10':8 'cmg':10 'deadlock':2B 'death':13 'earth':3C 'earthrevolt':5C 'eid':11 'harmonic':1A,9 'metal':12 'revolt':4C
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-4', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-1', 'Q-HAP-1', 'Q-PLAY-2', 'q-bass-1', 'q-grit-4']
                                      'lastfmtags'  ['female fronted metal', 'german', 'metal', 'death metal', 'metalcore', 'melodic death metal']
                                        'tag_date'  2005
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620301885.630547  (2021-05-06 13:51:25)
                             'size'  2298842