======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '315'
                                          'artist'  'Crematory'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Shadows of Mine'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-4', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['industrial metal', 'metal', 'death metal', 'gothic metal', 'melodic death "
 "metal', 'doom metal']")
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'eid-metal-death'
                                             'bpm'  '129.6'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '129.6'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-death'
'TIT2' (Title/songname/content description)         'Shadows of Mine'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Crematory'
'TXXX:Mp3gain_minmax'                               '117,207'
'TXXX:Mp3gain_undo'                                 '+003,+003,N'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['industrial metal',
 'metal',
 'death metal',
 'gothic metal',
 'melodic death metal',
 'doom metal']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.20 dB'
'TXXX:replaygain_track_peak'                        '0.512155'

========================== row from database ==========================
                                              'id'  1394451
                                            'path'  /data/Music/Bulk/00dwimp/00metal/00death/Crematory/Just Dreaming/Crematory - Shadows of Mine.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  315
                                           'genre'  eid-metal-death
                                        'filesize'  5046600
                                           'mtime'  1620301694
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal 00death Just Dreaming eid metal death
                                      'tag_artist'  Crematory
                                     'tag_release'  None
                                       'tag_title'  Shadows of Mine
                                             'bpm'  129.6
                                    'search_title'  'mine':3 'of':2 'shadows':1
                                   'search_artist'  'crematory':1
                                  'search_release'  
                                     'search_rest'  '00death':3 '00dwimp':1 '00metal':2 'death':8 'dreaming':5 'eid':6 'just':4 'metal':7
                                    'search_combo'  '00death':7 '00dwimp':5 '00metal':6 'crematory':4B 'death':12 'dreaming':9 'eid':10 'just':8 'metal':11 'mine':3A 'of':2A 'shadows':1A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  4A
                                           '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-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-1', 'q-bass-2', 'q-grit-4']
                                      'lastfmtags'  ['industrial metal', 'metal', 'death metal', 'gothic metal', 'melodic death metal', 'doom metal']
                                        'tag_date'  
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620301693.7062962  (2021-05-06 13:48:13)
                             'size'  5046600