======================== unified (from filesystem) ========================
                                         'bitrate'  '226.782'
                                        'duration'  '209'
                                          'artist'  'Led Zeppelin'
                                     'text_people'  ''
                                         'release'  'Led Zeppelin III'
                                           'title'  'Celebration Day'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-4', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['hard rock', 'rock', 'progressive rock', '70s', 'classic rock']"
                                     'discogstags'  "['rock', 'blues rock', 'hard rock', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '10'
                                            'date'  '2014'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive'
                                             'bpm'  '128.1'
                                             'key'  '8A'
                                        'acoustid'  '289fa484-bf3a-49f3-a311-1cc8835619b4'
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Led Zeppelin III'
'TBPM' (BPM (beats per minute))                     '128.1'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-progressive'
'TDOR' (Original release time)                      '1970'
'TDRC' (Recording time)                             '2014-06-04'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Burst mode)'
'TIT2' (Title/songname/content description)         'Celebration Day'
'TKEY' (Initial key)                                '8A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Led Zeppelin'
'TPE2' (Band/orchestra/accompaniment)               'Led Zeppelin'
'TPOS' (Part of a set)                              '1/2'
'TPUB' (Publisher)                                  'Atlantic'
'TRCK' (Track number/Position in set)               '3/10'
'TSO2'                                              'Led Zeppelin'
'TSOP' (Performer sort order)                       'Led Zeppelin'
'TXXX:ASIN'                                         'B00IZFJ7P6'
'TXXX:Acoustid Id'                                  '289fa484-bf3a-49f3-a311-1cc8835619b4'
'TXXX:BARCODE'                                      '4943674178124'
'TXXX:CATALOGNUMBER'                                'WPCR-15692/3'
'TXXX:MusicBrainz Album Artist Id'                  '678d88b2-87b0-403b-b63d-5da7465aecc3'
'TXXX:MusicBrainz Album Id'                         'c32655ad-76c6-4c0b-bf1d-24643e611541'
'TXXX:MusicBrainz Album Release Country'            'JP'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '678d88b2-87b0-403b-b63d-5da7465aecc3'
'TXXX:Q-HAP'                                        '3'
'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', 'blues rock', 'hard rock', 'classic rock']
'TXXX:lastfmtags'                                   ['hard rock', 'rock', 'progressive rock', '70s', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.21 dB'
'TXXX:replaygain_track_peak'                        '0.534401'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'5dc7fa73-ef87-4c3d-90bb-3a64a595f4dd')

========================== row from database ==========================
                                              'id'  1411584
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/Led Zeppelin/Led Zeppelin III/(03) Celebration Day.mp3
                                         'working'  None
                                         'bitrate'  226
                                    'duration_sec'  209
                                           'genre'  rock-cppex-progressive
                                        'filesize'  5946576
                                           'mtime'  1620736214
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy (03) rock cppex progressive
                                      'tag_artist'  Led Zeppelin
                                     'tag_release'  Led Zeppelin III
                                       'tag_title'  Celebration Day
                                             'bpm'  128.1
                                    'search_title'  'celebration':1 'day':2
                                   'search_artist'  'led':1 'zeppelin':2
                                  'search_release'  'iii':3 'led':1 'zeppelin':2
                                     'search_rest'  '03':2,3 'classicprogpsy':1 'cppex':5 'progressive':6 'rock':4
                                    'search_combo'  '03':9,10 'celebration':1A 'classicprogpsy':8 'cppex':12 'day':2A 'iii':7C 'led':3B,5C 'progressive':13 'rock':11 'zeppelin':4B,6C
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['hard rock', 'rock', 'progressive rock', '70s', 'classic rock']
                                        'tag_date'  2014
                                     'discogstags'  ['rock', 'blues rock', 'hard rock', 'classic rock']

============================== file details ==============================
                                           'mtime'  1620736214.211454  (2021-05-11 14:30:14)
                             'size'  5946576