======================== unified (from filesystem) ========================
                                         'bitrate'  '112.0'
                                        'duration'  '269'
                                          'artist'  'Pink Floyd'
                                     'text_people'  ''
                                         'release'  'Relics'
                                           'title'  'Remember a Day'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
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 "'q-chart-3', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
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                                      'lastfmtags'  ("['psychedelic rock', 'rock', 'progressive rock', 'psychedelic', 'classic "
 "rock']")
                                     'discogstags'  "['rock', 'psychedelic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '11'
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive'
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                                             'key'  '12B'
                                        'acoustid'  '93848cf5-9752-4ec8-b515-181265e53c5f'
rest: ''

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

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'TBPM' (BPM (beats per minute))                     '127.766'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-progressive'
'TDOR' (Original release time)                      '1971'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'Remember a Day'
'TKEY' (Initial key)                                '12B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Pink Floyd'
'TPE2' (Band/orchestra/accompaniment)               'Pink Floyd'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  '東芝EMI 株式会社'
'TRCK' (Track number/Position in set)               '4/11'
'TSO2'                                              'Pink Floyd'
'TSOP' (Performer sort order)                       'Pink Floyd'
'TSRC' (ISRC (international standard recording code))  'GBN9Y1100013'
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'TXXX:BARCODE'                                      '4988006791749'
'TXXX:CATALOGNUMBER'                                'TOCP-65737'
'TXXX:MusicBrainz Album Artist Id'                  '83d91898-7763-47d7-b03b-b92132375c47'
'TXXX:MusicBrainz Album Id'                         'eea49e61-6bf8-317c-b43e-e971f3b611f7'
'TXXX:MusicBrainz Album Release Country'            'JP'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'compilation'
'TXXX:MusicBrainz Artist Id'                        '83d91898-7763-47d7-b03b-b92132375c47'
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'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['rock', 'psychedelic rock']
'TXXX:lastfmtags'                                   ['psychedelic rock', 'rock', 'progressive rock', 'psychedelic', 'classic rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.19 dB'
'TXXX:replaygain_track_peak'                        '0.635927'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'819f4310-f15c-498c-b6db-f62cd6e0fcc7')

========================== row from database ==========================
                                              'id'  1490540
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/Pink Floyd/Relics/Pink Floyd - Remember A Day - 04.mp3
                                         'working'  None
                                         'bitrate'  112
                                    'duration_sec'  269
                                           'genre'  rock-cppex-progressive
                                        'filesize'  3773174
                                           'mtime'  1620737725
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy A 04 rock cppex progressive
                                      'tag_artist'  Pink Floyd
                                     'tag_release'  Relics
                                       'tag_title'  Remember a Day
                                             'bpm'  127.766
                                    'search_title'  'a':2 'day':3 'remember':1
                                   'search_artist'  'floyd':2 'pink':1
                                  'search_release'  'relics':1
                                     'search_rest'  'a':2 'classicprogpsy':1 'cppex':4 'progressive':5 'rock':3
                                    'search_combo'  'a':2A,8 'classicprogpsy':7 'cppex':10 'day':3A 'floyd':5B 'pink':4B 'progressive':11 'relics':6C 'remember':1A 'rock':9
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-3']
                                      'lastfmtags'  ['psychedelic rock', 'rock', 'progressive rock', 'psychedelic', 'classic rock']
                                        'tag_date'  2001
                                     'discogstags'  ['rock', 'psychedelic rock']

============================== file details ==============================
                                           'mtime'  1620737724.9885366  (2021-05-11 14:55:24)
                             'size'  3773174