======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '226'
                                          'artist'  'Poison The Well'
                                     'text_people'  ''
                                         'release'  'Distance Makes the Heart Grow'
                                           'title'  'Obstacle'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-4', 'q-play-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['post hardcore', 'hardcore', 'screamo', 'metal', 'metalcore']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'eid-metal'
                                             'bpm'  '132.357'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Distance Makes the Heart Grow'
'TBPM' (BPM (beats per minute))                     '132.357'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'Obstacle'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Poison The Well'
'TRCK' (Track number/Position in set)               '4'
'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'                                   ['post hardcore', 'hardcore', 'screamo', 'metal', 'metalcore']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.55 dB'
'TXXX:replaygain_track_peak'                        '0.378836'

========================== row from database ==========================
                                              'id'  152074
                                            'path'  /data/Music/Bulk/00dwimp/Poison the Well/04-obstacle.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  226
                                           'genre'  eid-metal
                                        'filesize'  5445331
                                           'mtime'  1620301576
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 04 obstacle eid metal
                                      'tag_artist'  Poison The Well
                                     'tag_release'  Distance Makes the Heart Grow
                                       'tag_title'  Obstacle
                                             'bpm'  132.357
                                    'search_title'  'obstacle':1
                                   'search_artist'  'poison':1 'the':2 'well':3
                                  'search_release'  'distance':1 'grow':5 'heart':4 'makes':2 'the':3
                                     'search_rest'  '00dwimp':1 'eid':3 'metal':4 'obstacle':2
                                    'search_combo'  '00dwimp':10 'distance':5C 'eid':12 'grow':9C 'heart':8C 'makes':6C 'metal':13 'obstacle':1A,11 'poison':2B 'the':3B,7C 'well':4B
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  6A
                                           '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-3', 'q-syn-2', 'q-chart-3', 'q-other-4', 'Q-HAP-1', 'q-bass-2', 'q-grit-4']
                                      'lastfmtags'  ['post hardcore', 'hardcore', 'screamo', 'metal', 'metalcore']
                                        'tag_date'  2002
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620301575.5041504  (2021-05-06 13:46:15)
                             'size'  5445331