======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '252'
                                          'artist'  'Sergei Rachmaninoff'
                                     'text_people'  ''
                                         'release'  'The Art of the Theremin'
                                           'title'  'Song of Grusia'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-2', "
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 "'Q-PIANO-2', 'q-chart-2', 'q-drums-1', 'q-other-1', 'q-vocals-4', "
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                                      'lastfmtags'  "['russian', 'composers', 'piano', 'romantic', 'classical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '12'
                                            'date'  '1987'
                                        'comments'  ''
                                           'genre'  'electronic-experimental-early;mi-theremin'
                                             'bpm'  '123'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'The Art of the Theremin'
'TBPM' (BPM (beats per minute))                     '123'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-experimental-early', 'mi-theremin']
'TDOR' (Original release time)                      '1987'
'TDRC' (Recording time)                             '1987'
'TIT2' (Title/songname/content description)         'Song of Grusia'
'TKEY' (Initial key)                                '1A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Sergei Rachmaninoff'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Delos'
'TRCK' (Track number/Position in set)               '2/12'
'TSO2'                                              'Rockmore, Clara'
'TSOP' (Performer sort order)                       'Rachmaninoff, Sergei'
'TXXX:Artists'                                      'Sergei Rachmaninoff'
'TXXX:BARCODE'                                      '013491101422'
'TXXX:CATALOGNUMBER'                                'D/CD 1014'
'TXXX:MusicBrainz Album Artist Id'                  'f6871779-18e9-4634-b0de-2e33baef8945'
'TXXX:MusicBrainz Album Id'                         'c04dfa5f-0d72-4cc4-b4cb-a15337a5a292'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '44b16e44-da77-4580-b851-0d765904573e'
'TXXX:MusicBrainz Release Group Id'                 'b637b00a-b9a3-3c5e-b253-64a599701a9f'
'TXXX:MusicBrainz Release Track Id'                 'a9888e97-1e58-47a5-b504-ef6e10b17359'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['russian', 'composers', 'piano', 'romantic', 'classical']
'TXXX:originalyear'                                 '1987'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.98 dB'
'TXXX:replaygain_track_peak'                        '0.612038'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'24f7da4a-3f92-4db8-ad7d-59aeecec0e43')

========================== row from database ==========================
                                              'id'  1370726
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Wieniawski - Clara Rockmore - The Moogs Present Clara Rockmore Virtuoso Theremin pt.1/Clara Rockmore Theremin 02 Rachmaninoff Song of Grusia.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  252
                                           'genre'  electronic-experimental-early;mi-theremin
                                        'filesize'  10204915
                                           'mtime'  1620528010
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Wieniawski Clara Rockmore Moogs Present Clara Rockmore Virtuoso pt.1 Clara Rockmore 02 electronic experimental early;mi theremin
                                      'tag_artist'  Sergei Rachmaninoff
                                     'tag_release'  The Art of the Theremin
                                       'tag_title'  Song of Grusia
                                             'bpm'  123.0
                                    'search_title'  'grusia':3 'of':2 'song':1
                                   'search_artist'  'rachmaninoff':2 'sergei':1
                                  'search_release'  'art':2 'of':3 'the':1 'theremin':4
                                     'search_rest'  '1':8 'clara':2 'early':12,14 'electronic':10 'experimental':11 'mi':13,15 'moogs':4 'present':5 'pt':7 'pt1':9 'rockmore':3 'theremin':16 'virtuoso':6 'wieniawski':1
                                    'search_combo'  '1':17 'art':7C 'clara':11 'early':21,23 'electronic':19 'experimental':20 'grusia':3A 'mi':22,24 'moogs':13 'of':2A,8C 'present':14 'pt':16 'pt1':18 'rachmaninoff':5B 'rockmore':12 'sergei':4B 'song':1A 'the':6C 'theremin':9C,25 'virtuoso':15 'wieniawski':10
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-3', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['russian', 'composers', 'piano', 'romantic', 'classical']
                                        'tag_date'  1987
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528010.1689498  (2021-05-09 04:40:10)
                             'size'  10204915