<pre>
======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '285'
                                          'artist'  'Nightwish'
                                     'text_people'  ''
                                         'release'  'Dream of the Warrior'
                                           'title'  'The Siren'
                                           '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-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['power metal', 'female fronted metal', 'symphonic metal', 'metal', 'gothic "
 "metal']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  '14'
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'eid-metal'
                                             'bpm'  '122'
                                             'key'  '3A'
                                        'acoustid'  'f5ae4b9b-829c-4103-8023-89915183b252'
rest: ''

======================== rawer (from filesystem) ========================<mutagen.mp3.MPEGInfo object at 0x7f9537d75e50>

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''<br/>                                     <img style="width:150px" src="image?fid=1398516"/>
'TALB' (Album/Movie/Show title)                     'Dream of the Warrior'
'TBPM' (BPM (beats per minute))                     '122'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal'
'TIT2' (Title/songname/content description)         'The Siren'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Nightwish'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '10/14'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Nightwish'
'TSRC' (ISRC (international standard recording code))  'DED830471906/DED830502332/NLA320480923'
'TXXX:Acoustid Id'                                  'f5ae4b9b-829c-4103-8023-89915183b252'
'TXXX:Artists'                                      'Nightwish'
'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'                        '00a9f935-ba93-4fc8-a33a-993abe9c936b'
'TXXX:MusicBrainz Release Group Id'                 '2f7a2c89-18fa-3353-91d9-4efb9186ea22'
'TXXX:MusicBrainz Release Track Id'                 '286dac44-a1dc-3294-9985-8f3ccd3811b4'
'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:lastfmtags'                                   ['power metal',
 'female fronted metal',
 'symphonic metal',
 'metal',
 'gothic metal']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.49 dB'
'TXXX:replaygain_track_peak'                        '0.396420'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'2ba4907b-1578-466c-bb59-19f970815c5c')

========================== row from database ==========================
                                              'id'  1398516
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Dream of the warrior/Track 10.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  285
                                           'genre'  eid-metal
                                        'filesize'  4621408
                                           'mtime'  1620300615
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal warrior Track 10 eid metal
                                      'tag_artist'  Nightwish
                                     'tag_release'  Dream of the Warrior
                                       'tag_title'  The Siren
                                             'bpm'  122.0
                                    'search_title'  'siren':2 'the':1
                                   'search_artist'  'nightwish':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':8 '00metal':9 'dream':4C 'eid':12 'metal':13 'nightwish':3B 'of':5C 'siren':2A 'the':1A,6C 'track':11 'warrior':7C,10
                                    'tag_tracknum'  10
                                      'num_images'  1
                                             'key'  3A
                                           '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-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-1', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['power metal', 'female fronted metal', 'symphonic metal', 'metal', 'gothic metal']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620300614.978022  (2021-05-06 13:30:14)
                             'size'  4621408