<pre>
======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '212'
                                          'artist'  'Hole'
                                     'text_people'  ''
                                         'release'  'Live Through This'
                                           'title'  'Doll Parts'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-3', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['alternative rock', 'female vocalists', 'alternative', 'grunge', 'rock']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  '12'
                                            'date'  '1994'
                                        'comments'  ''
                                           'genre'  'rock-gr-grunge'
                                             'bpm'  '136.920'
                                             'key'  '9B'
                                        'acoustid'  'a4151a5a-0c37-44c3-86de-4ace707b576e'
rest: ''

======================== rawer (from filesystem) ========================<mutagen.mp3.MPEGInfo object at 0x7f9537d75880>

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''<br/>                                     <img style="width:150px" src="image?fid=923056"/>
'PRIV:AverageLevel:{"\x00\x00'                      PRIV(owner='AverageLevel', data=b'{"\x00\x00')
'PRIV:PeakValue:¡\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xa1\x7f\x00\x00')
'TALB' (Album/Movie/Show title)                     'Live Through This'
'TBPM' (BPM (beats per minute))                     '136.920'
'TCON' (Content type, a.k.a. Genre)                 'rock-gr-grunge'
'TDOR' (Original release time)                      '1994'
'TDRC' (Recording time)                             '1994-04-12'
'TIPL' (Involved people list)                       TIPL(encoding=&lt;Encoding.UTF16: 1&gt;, people=[['producer', 'Paul Q. Kolderie'], ['producer', 'Sean Slade'], ['engineer', 'Paul Q. Kolderie'], ['engineer', 'Sean Slade'], ['additional vocal', 'Dana Kletter']])
'TIT2' (Title/songname/content description)         'Doll Parts'
'TKEY' (Initial key)                                '9B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Hole'
'TPE2' (Band/orchestra/accompaniment)               'Hole'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Geffen Records'
'TRCK' (Track number/Position in set)               '6/12'
'TSO2'                                              'Hole'
'TSOP' (Performer sort order)                       'Hole'
'TSRC' (ISRC (international standard recording code))  'DED629595801'
'TXXX:ASIN'                                         'B000003TAY'
'TXXX:Acoustid Id'                                  'a4151a5a-0c37-44c3-86de-4ace707b576e'
'TXXX:BARCODE'                                      '720642463123'
'TXXX:CATALOGNUMBER'                                'DGCD-24631'
'TXXX:MusicBrainz Album Artist Id'                  '1dcc8968-f2cd-441c-beda-6270f70f2863'
'TXXX:MusicBrainz Album Id'                         '6d2787f1-f584-4a76-8a97-7926e96fd73e'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '1dcc8968-f2cd-441c-beda-6270f70f2863'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:Tool Name'                                    'Media Center'
'TXXX:Tool Version'                                 '13.0.115'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['alternative rock', 'female vocalists', 'alternative', 'grunge', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '2'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.43 dB'
'TXXX:replaygain_track_peak'                        '0.455964'
'TXXX:tool name'                                    'Media Center'
'TXXX:tool version'                                 '13.0.115'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'cb14aa6b-2e8c-40ae-ad30-5651e9318996')

========================== row from database ==========================
                                              'id'  923056
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/Hole/Live Through This/06.Doll Parts.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  212
                                           'genre'  rock-gr-grunge
                                        'filesize'  8810652
                                           'mtime'  1636902828
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia 06.Doll rock gr grunge
                                      'tag_artist'  Hole
                                     'tag_release'  Live Through This
                                       'tag_title'  Doll Parts
                                             'bpm'  136.92
                                    'search_title'  'doll':1 'parts':2
                                   'search_artist'  'hole':1
                                  'search_release'  'live':1 'this':3 'through':2
                                     'search_rest'  '00asia':1 '06':2 '06doll':4 'doll':3 'gr':6 'grunge':7 'rock':5
                                    'search_combo'  '00asia':7 '06':8 '06doll':10 'doll':1A,9 'gr':12 'grunge':13 'hole':3B 'live':4C 'parts':2A 'rock':11 'this':6C 'through':5C
                                    'tag_tracknum'  6
                                      'num_images'  1
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['alternative rock', 'female vocalists', 'alternative', 'grunge', 'rock']
                                        'tag_date'  1994
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1636902827.568821  (2021-11-14 16:13:47)
                             'size'  8810652