<pre>
======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '365'
                                          'artist'  'Sirenia'
                                     'text_people'  ''
                                         'release'  'Dream of the Warrior'
                                           'title'  'In My Darkest Hours'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-2', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['metal', 'gothic', 'female fronted metal', 'symphonic metal', 'gothic metal']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '14'
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'eid-metal'
                                             'bpm'  '130'
                                             'key'  '9A'
                                        'acoustid'  '449f82f4-ac67-4dcb-b40c-ba76be6a3f85'
rest: ''

======================== rawer (from filesystem) ========================<mutagen.mp3.MPEGInfo object at 0x7f9537d81ee0>

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''<br/>                                     <img style="width:150px" src="image?fid=1393637"/>
'TALB' (Album/Movie/Show title)                     'Dream of the Warrior'
'TBPM' (BPM (beats per minute))                     '130'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal'
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         'In My Darkest Hours'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Sirenia'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '2/14'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Sirenia'
'TXXX:Acoustid Id'                                  '449f82f4-ac67-4dcb-b40c-ba76be6a3f85'
'TXXX:Artists'                                      'Sirenia'
'TXXX:MusicBrainz Album Artist Id'                  '89ad4ac3-39f7-470e-963a-56509c546377'
'TXXX:MusicBrainz Album Id'                         '3a5221f5-9333-44c0-b064-fa2edbb13dd8'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        '5fcd6db8-979c-42e3-99a6-fd8302f82a9d'
'TXXX:MusicBrainz Release Group Id'                 '2f7a2c89-18fa-3353-91d9-4efb9186ea22'
'TXXX:MusicBrainz Release Track Id'                 '5ea1fc7c-545a-3362-874a-2fc97cd5a108'
'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', 'gothic', 'female fronted metal', 'symphonic metal', 'gothic metal']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.36 dB'
'TXXX:replaygain_track_peak'                        '0.406752'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'ec8849eb-82ee-406a-8006-ac23a2252fb0')

========================== row from database ==========================
                                              'id'  1393637
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Dream of the warrior/Track 02.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  365
                                           'genre'  eid-metal
                                        'filesize'  5898643
                                           'mtime'  1620300602
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal warrior Track 02 eid metal
                                      'tag_artist'  Sirenia
                                     'tag_release'  Dream of the Warrior
                                       'tag_title'  In My Darkest Hours
                                             'bpm'  130.0
                                    'search_title'  'darkest':3 'hours':4 'in':1 'my':2
                                   'search_artist'  'sirenia':1
                                  'search_release'  'dream':1 'of':2 'the':3 'warrior':4
                                     'search_rest'  '00dwimp':1 '00metal':2 'eid':5 'metal':6 'track':4 'warrior':3
                                    'search_combo'  '00dwimp':10 '00metal':11 'darkest':3A 'dream':6C 'eid':14 'hours':4A 'in':1A 'metal':15 'my':2A 'of':7C 'sirenia':5B 'the':8C 'track':13 'warrior':9C,12
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  9A
                                           '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-2', 'q-syn-2', 'q-chart-2', 'q-other-4', 'Q-HAP-1', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['metal', 'gothic', 'female fronted metal', 'symphonic metal', 'gothic metal']
                                        'tag_date'  2004
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620300602.3527796  (2021-05-06 13:30:02)
                             'size'  5898643