======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '293'
                                          'artist'  'Moonspell'
                                     'text_people'  ''
                                         'release'  'Everything Invaded'
                                           'title'  'Crystal Gazing (album version)'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['metal', 'black metal', 'doom metal', 'dark metal', 'gothic metal']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '3'
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'eid-metal-black'
                                             'bpm'  '139.754'
                                             'key'  '8A'
                                        'acoustid'  '436a5783-42d5-487f-a21c-40beb2923712'
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'Everything Invaded'
'TBPM' (BPM (beats per minute))                     '139.754'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-black'
'TDOR' (Original release time)                      '2003'
'TDRC' (Recording time)                             '2003-07-23'
'TIT2' (Title/songname/content description)         'Crystal Gazing (album version)'
'TKEY' (Initial key)                                '8A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Moonspell'
'TPE2' (Band/orchestra/accompaniment)               'Moonspell'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Century Media'
'TRCK' (Track number/Position in set)               '2/3'
'TSO2'                                              'Moonspell'
'TSOP' (Performer sort order)                       'Moonspell'
'TSRC' (ISRC (international standard recording code))  'GBDHC0304909'
'TXXX:ASIN'                                         'B0000AGDQ0'
'TXXX:Acoustid Id'                                  '436a5783-42d5-487f-a21c-40beb2923712'
'TXXX:BARCODE'                                      '7277017748932'
'TXXX:CATALOGNUMBER'                                'CM 77489-3'
'TXXX:MusicBrainz Album Artist Id'                  '386b19c6-a3d2-414a-bef2-c178572b1cbe'
'TXXX:MusicBrainz Album Id'                         'e078b5b9-0bb5-44ae-b29c-94d82adfab41'
'TXXX:MusicBrainz Album Release Country'            'DE'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'single'
'TXXX:MusicBrainz Artist Id'                        '386b19c6-a3d2-414a-bef2-c178572b1cbe'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['metal', 'black metal', 'doom metal', 'dark metal', 'gothic metal']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '-2.04 dB'
'TXXX:replaygain_track_peak'                        '0.423214'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'91c90f04-be61-4933-a452-257ccde4f3a6')

========================== row from database ==========================
                                              'id'  1396710
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Moonspell/2003 - Everything invaded/02 - crystal gazing (album version).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  293
                                           'genre'  eid-metal-black
                                        'filesize'  7049870
                                           'mtime'  1620301736
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal 2003 invaded 02 crystal gazing eid metal black
                                      'tag_artist'  Moonspell
                                     'tag_release'  Everything Invaded
                                       'tag_title'  Crystal Gazing (album version)
                                             'bpm'  139.754
                                    'search_title'  'album':3,4 'crystal':1 'gazing':2 'version':5,6
                                   'search_artist'  'moonspell':1
                                  'search_release'  'everything':1 'invaded':2
                                     'search_rest'  '00dwimp':1 '00metal':2 '2003':3 'black':9 'crystal':5 'eid':7 'gazing':6 'invaded':4 'metal':8
                                    'search_combo'  '00dwimp':10 '00metal':11 '2003':12 'album':3A,4A 'black':18 'crystal':1A,14 'eid':16 'everything':8C 'gazing':2A,15 'invaded':9C,13 'metal':17 'moonspell':7B 'version':5A,6A
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-1', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['metal', 'black metal', 'doom metal', 'dark metal', 'gothic metal']
                                        'tag_date'  2003
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620301736.1380317  (2021-05-06 13:48:56)
                             'size'  7049870