======================== unified (from filesystem) ========================
                                         'bitrate'  '112.0'
                                        'duration'  '302'
                                          'artist'  'Pink Floyd'
                                     'text_people'  ''
                                         'release'  'The Final Cut'
                                           'title'  'Not Now John'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
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                                      'lastfmtags'  ("['psychedelic rock', 'rock', 'progressive rock', 'psychedelic', 'classic "
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                                     'discogstags'  "['rock', 'prog rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  '12'
                                            'date'  '1983'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive'
                                             'bpm'  '91.680'
                                             'key'  '10A'
                                        'acoustid'  '875b8732-f8b4-43fe-b6ad-a03883434bee'
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Final Cut'
'TBPM' (BPM (beats per minute))                     '91.680'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-progressive'
'TDOR' (Original release time)                      '1983'
'TDRC' (Recording time)                             '1983'
'TIT2' (Title/songname/content description)         'Not Now John'
'TKEY' (Initial key)                                '10A'
'TMED' (Media type)                                 '12" Vinyl'
'TPE1' (Lead performer(s)/Soloist(s))               'Pink Floyd'
'TPE2' (Band/orchestra/accompaniment)               'Pink Floyd'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Harvest'
'TRCK' (Track number/Position in set)               '11/12'
'TSO2'                                              'Pink Floyd'
'TSOP' (Performer sort order)                       'Pink Floyd'
'TSRC' (ISRC (international standard recording code))  'GBDJQ0400013/GBN9Y1100132'
'TXXX:Acoustid Id'                                  '875b8732-f8b4-43fe-b6ad-a03883434bee'
'TXXX:CATALOGNUMBER'                                '1C 064-650 42'
'TXXX:MusicBrainz Album Artist Id'                  '83d91898-7763-47d7-b03b-b92132375c47'
'TXXX:MusicBrainz Album Id'                         '1a0d31b4-b2fc-3adf-8bd8-494c4fe33359'
'TXXX:MusicBrainz Album Release Country'            'DE'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '83d91898-7763-47d7-b03b-b92132375c47'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['rock', 'prog 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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.60 dB'
'TXXX:replaygain_track_peak'                        '0.625885'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'bcb90e0a-7397-4512-acaa-47e3b442657f')

========================== row from database ==========================
                                              'id'  1490474
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/Pink Floyd/The Final Cut/Pink Floyd - Not Now John - 11.mp3
                                         'working'  None
                                         'bitrate'  112
                                    'duration_sec'  302
                                           'genre'  rock-cppex-progressive
                                        'filesize'  4243118
                                           'mtime'  1620737731
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy 11 rock cppex progressive
                                      'tag_artist'  Pink Floyd
                                     'tag_release'  The Final Cut
                                       'tag_title'  Not Now John
                                             'bpm'  91.68
                                    'search_title'  'john':3 'not':1 'now':2
                                   'search_artist'  'floyd':2 'pink':1
                                  'search_release'  'cut':3 'final':2 'the':1
                                     'search_rest'  'classicprogpsy':1 'cppex':3 'progressive':4 'rock':2
                                    'search_combo'  'classicprogpsy':9 'cppex':11 'cut':8C 'final':7C 'floyd':5B 'john':3A 'not':1A 'now':2A 'pink':4B 'progressive':12 'rock':10 'the':6C
                                    'tag_tracknum'  11
                                      'num_images'  0
                                             'key'  10A
                                           '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-3', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-3']
                                      'lastfmtags'  ['psychedelic rock', 'rock', 'progressive rock', 'psychedelic', 'classic rock']
                                        'tag_date'  1983
                                     'discogstags'  ['rock', 'prog rock']

============================== file details ==============================
                                           'mtime'  1620737730.714583  (2021-05-11 14:55:30)
                             'size'  4243118