======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '209'
                                          'artist'  'The Arcade Fire'
                                     'text_people'  ''
                                         'release'  'Neon Bible'
                                           'title'  'Keep The Car Running'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['indie', 'alternative', 'rock', 'indie rock', 'canadian']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '2007'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-indie-rock'
                                             'bpm'  '129.646'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            '0'
'COMM:iTunNORM:eng'                                 (' 000011FA 0000114B 00006319 00005F8E 0001A6F5 0001A6F5 0000898D 00008BF2 '
 '00003924 000222BC')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 000009F0 00000000008CAF00 00000000 003FC273 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_IDs:eng'                          '11+E0EF52A7BA5C0B9495E9019FEF1D2899+8669738'
'TALB' (Album/Movie/Show title)                     'Neon Bible'
'TBPM' (BPM (beats per minute))                     '129.646'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-indie-rock'
'TDRC' (Recording time)                             '2007'
'TENC' (Encoded by)                                 'iTunes v7.0.2.16'
'TIT2' (Title/songname/content description)         'Keep The Car Running'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Arcade Fire'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['indie', 'alternative', 'rock', 'indie rock', 'canadian']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'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'                        '-2.02 dB'
'TXXX:replaygain_track_peak'                        '0.477714'

========================== row from database ==========================
                                              'id'  1378620
                                            'path'  /data/Music/Bulk/00poprockelectronic-poprock-indierock/The Arcade Fire/Neon Bible/02 Keep The Car Running.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  209
                                           'genre'  ifs-songwriter-indie-rock
                                        'filesize'  4184994
                                           'mtime'  1637019778
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic poprock indierock 02 ifs songwriter indie rock
                                      'tag_artist'  The Arcade Fire
                                     'tag_release'  Neon Bible
                                       'tag_title'  Keep The Car Running
                                             'bpm'  129.646
                                    'search_title'  'car':3 'keep':1 'running':4 'the':2
                                   'search_artist'  'arcade':2 'fire':3 'the':1
                                  'search_release'  'bible':2 'neon':1
                                     'search_rest'  '00poprockelectronic':1 'ifs':4 'indie':6 'indierock':3 'poprock':2 'rock':7 'songwriter':5
                                    'search_combo'  '00poprockelectronic':10 'arcade':6B 'bible':9C 'car':3A 'fire':7B 'ifs':13 'indie':15 'indierock':12 'keep':1A 'neon':8C 'poprock':11 'rock':16 'running':4A 'songwriter':14 'the':2A,5B
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'alternative', 'rock', 'indie rock', 'canadian']
                                        'tag_date'  2007
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1637019778.3048704  (2021-11-16 00:42:58)
                             'size'  4184994