<pre>
======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '207'
                                          'artist'  'Katra'
                                     'text_people'  ''
                                         'release'  'Beast Within'
                                           'title'  'Grail of Sahara'
                                           '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-4', 'q-play-3', "
 "'q-chart-2', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['finnish', 'female fronted metal', 'metal', 'female vocalists', 'gothic "
 "metal', 'symphonic metal']")
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '13'
                                            'date'  '2008'
                                        'comments'  ''
                                           'genre'  'eid-metal'
                                             'bpm'  '129.233'
                                             'key'  '2B'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================<mutagen.mp3.MPEGInfo object at 0x7f95382dae80>

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''<br/>                                     <img style="width:150px" src="image?fid=1392831"/>
'COMM::eng'                                         'haRD'
'POPM:'                                             POPM(email='', rating=204, count=0)
'TALB' (Album/Movie/Show title)                     'Beast Within'
'TBPM' (BPM (beats per minute))                     '129.233'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal'
'TDOR' (Original release time)                      '2008'
'TDRC' (Recording time)                             '2008-12-15'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Äîñòîâåðíûé ðåæèì)'
'TIT2' (Title/songname/content description)         'Grail of Sahara'
'TKEY' (Initial key)                                '2B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Katra'
'TPE2' (Band/orchestra/accompaniment)               'Katra'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Napalm Records'
'TRCK' (Track number/Position in set)               '1/13'
'TSO2'                                              'Katra'
'TSOP' (Performer sort order)                       'Katra'
'TXXX:ASIN'                                         'B001QDF07I'
'TXXX:BARCODE'                                      '4560329800010'
'TXXX:CATALOGNUMBER'                                'RBNCD-1001'
'TXXX:FMPS_Rating'                                  '0.8'
'TXXX:MusicBrainz Album Artist Id'                  'ecf9ac46-dbb5-424c-87a5-be2fce8661c8'
'TXXX:MusicBrainz Album Id'                         'eee4f0c1-ef4f-453c-826f-4e74023ce918'
'TXXX:MusicBrainz Album Release Country'            'JP'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        'ecf9ac46-dbb5-424c-87a5-be2fce8661c8'
'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'                                   ['finnish',
 'female fronted metal',
 'metal',
 'female vocalists',
 'gothic metal',
 'symphonic metal']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '4'
'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'                        '-1.93 dB'
'TXXX:replaygain_track_peak'                        '0.360933'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'007f1973-9ffa-4629-bc82-a64e6c13eb14')

========================== row from database ==========================
                                              'id'  1392831
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Katra/01-Grail Of Sahara.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  207
                                           'genre'  eid-metal
                                        'filesize'  8355473
                                           'mtime'  1620300981
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal 01 Of eid metal
                                      'tag_artist'  Katra
                                     'tag_release'  Beast Within
                                       'tag_title'  Grail of Sahara
                                             'bpm'  129.233
                                    'search_title'  'grail':1 'of':2 'sahara':3
                                   'search_artist'  'katra':1
                                  'search_release'  'beast':1 'within':2
                                     'search_rest'  '00dwimp':1 '00metal':2 'eid':4 'metal':5 'of':3
                                    'search_combo'  '00dwimp':7 '00metal':8 'beast':5C 'eid':10 'grail':1A 'katra':4B 'metal':11 'of':2A,9 'sahara':3A 'within':6C
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  2B
                                           '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-3', 'Q-HAP-1', 'q-bass-4', 'q-grit-4']
                                      'lastfmtags'  ['finnish', 'female fronted metal', 'metal', 'female vocalists', 'gothic metal', 'symphonic metal']
                                        'tag_date'  2008
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620300980.7358768  (2021-05-06 13:36:20)
                             'size'  8355473