======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '101'
                                          'artist'  'The Blood Brothers'
                                     'text_people'  ''
                                         'release'  'March on Electric Children'
                                           'title'  'Birth Skin-Deat Leather'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-4', 'q-grit-4', 'q-play-3', "
 "'q-chart-2', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['indie', 'post hardcore', 'hardcore', 'experimental', 'screamo']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '01'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'eid-metal'
                                             'bpm'  '117.330'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 00001B55 00001AFB 00004F5E'
'COMM:iTunNORM:eng'                                 (' 00001B55 00001AFB 00004F5E 00003822 00015FBE 0000273E 00007AC6 00007887 '
 '000138C5 00009C57')
'TALB' (Album/Movie/Show title)                     'March on Electric Children'
'TBPM' (BPM (beats per minute))                     '117.330'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'Birth Skin-Deat Leather'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Blood Brothers'
'TPE2' (Band/orchestra/accompaniment)               'The Blood Brothers'
'TPUB' (Publisher)                                  'Three One G'
'TRCK' (Track number/Position in set)               '01'
'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:STYLES'                                       'Punk Revival'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['indie', 'post hardcore', 'hardcore', 'experimental', 'screamo']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '4'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+6.02 dB'
'TXXX:replaygain_track_peak'                        '0.179247'

========================== row from database ==========================
                                              'id'  333519
                                            'path'  /data/Music/Bulk/00dwimp/The Blood Brothers/[2002] March on Electric Children/01 Birth Skin-Deat Leather.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  101
                                           'genre'  eid-metal
                                        'filesize'  2433570
                                           'mtime'  1620301646
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp [2002] 01 eid metal
                                      'tag_artist'  The Blood Brothers
                                     'tag_release'  March on Electric Children
                                       'tag_title'  Birth Skin-Deat Leather
                                             'bpm'  117.33
                                    'search_title'  'birth':1 'deat':3 'leather':5 'skin':2 'skindeat':4
                                   'search_artist'  'blood':2 'brothers':3 'the':1
                                  'search_release'  'children':4 'electric':3 'march':1 'on':2
                                     'search_rest'  '00dwimp':1 '2002':2,3 'eid':4 'metal':5
                                    'search_combo'  '00dwimp':13 '2002':14,15 'birth':1A 'blood':7B 'brothers':8B 'children':12C 'deat':3A 'eid':16 'electric':11C 'leather':5A 'march':9C 'metal':17 'on':10C 'skin':2A 'skindeat':4A 'the':6B
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-4', 'q-drums-2', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-1', 'q-bass-4', 'q-grit-4']
                                      'lastfmtags'  ['indie', 'post hardcore', 'hardcore', 'experimental', 'screamo']
                                        'tag_date'  2002
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620301645.825677  (2021-05-06 13:47:25)
                             'size'  2433570