<pre>
======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '239'
                                          'artist'  'Tom Waits'
                                     'text_people'  'Tom Waits'
                                         'release'  'Night on Earth'
                                           'title'  'Dragging a Dead Priest'
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                                      'lastfmtags'  "['blues', 'rock', 'alternative', 'experimental', 'singer songwriter']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  '16'
                                            'date'  '1991'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-eos'
                                             'bpm'  '140'
                                             'key'  '2B'
                                        'acoustid'  '4e6e2a54-9c18-49d1-88e5-2e67758561be'
rest: ''

======================== rawer (from filesystem) ========================<mutagen.mp3.MPEGInfo object at 0x7f95382dae50>

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'COMM::dut'                                         '12'
'COMM:ID3v1 Comment:XXX'                            '12'
'PRIV:AverageLevel:¸\x01\x00\x00'                   PRIV(owner='AverageLevel', data=b'\xb8\x01\x00\x00')
'PRIV:PeakValue:\x98-\x00\x00'                      PRIV(owner='PeakValue', data=b'\x98-\x00\x00')
'TALB' (Album/Movie/Show title)                     'Night on Earth'
'TBPM' (BPM (beats per minute))                     '140'
'TCOM' (Composer)                                   'Tom Waits'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-eos'
'TDOR' (Original release time)                      '1991'
'TDRC' (Recording time)                             '1991'
'TIPL' (Involved people list)                       TIPL(encoding=&lt;Encoding.UTF16: 1&gt;, people=[['mix', 'Biff Dawes'], ['engineer', 'Joe Marquez'], ['arranger', 'Francis Thumm'], ['arranger', 'Tom Waits'], ['producer', 'Tom Waits']])
'TIT2' (Title/songname/content description)         'Dragging a Dead Priest'
'TKEY' (Initial key)                                '2B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Tom Waits'
'TPE2' (Band/orchestra/accompaniment)               'Tom Waits'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Island'
'TRCK' (Track number/Position in set)               '12/16'
'TSO2'                                              'Waits, Tom'
'TSOC'                                              'Waits, Tom'
'TSOP' (Performer sort order)                       'Waits, Tom'
'TXXX:ASIN'                                         'B0002BHAYG'
'TXXX:Acoustid Id'                                  '4e6e2a54-9c18-49d1-88e5-2e67758561be'
'TXXX:Artists'                                      'Tom Waits'
'TXXX:BARCODE'                                      '4007192623709'
'TXXX:CATALOGNUMBER'                                '262 370'
'TXXX:MusicBrainz Album Artist Id'                  'c3aeb863-7b26-4388-94e8-5a240f2be21b'
'TXXX:MusicBrainz Album Id'                         'bc3825fd-c854-3c55-acbc-50a82510ee50'
'TXXX:MusicBrainz Album Release Country'            'DE'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/soundtrack'
'TXXX:MusicBrainz Artist Id'                        'c3aeb863-7b26-4388-94e8-5a240f2be21b'
'TXXX:MusicBrainz Release Group Id'                 '3c087369-e6ac-3fc3-aea6-197a17ce44ce'
'TXXX:MusicBrainz Release Track Id'                 'a795d24c-47bb-36af-816a-091e765a27e8'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['blues', 'rock', 'alternative', 'experimental', 'singer songwriter']
'TXXX:originalyear'                                 '1991'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'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'                        '+7.90 dB'
'TXXX:replaygain_track_peak'                        '0.847279'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'66fabfe3-1a1f-4b46-a93a-faee07fb8348')

========================== row from database ==========================
                                              'id'  1253134
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Waits, Tom - Tom Waits/Night on Earth/12 - Dragging A Dead Priest.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  239
                                           'genre'  ifs-songwriter-eos
                                        'filesize'  4851212
                                           'mtime'  1639508267
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos Waits, 12 A ifs songwriter eos
                                      'tag_artist'  Tom Waits
                                     'tag_release'  Night on Earth
                                       'tag_title'  Dragging a Dead Priest
                                             'bpm'  140.0
                                    'search_title'  'a':2 'dead':3 'dragging':1 'priest':4
                                   'search_artist'  'tom':1 'waits':2
                                  'search_release'  'earth':3 'night':1 'on':2
                                     'search_rest'  '00singer':1 'a':6 'eos':3 'ifs':7 'songwriter':2 'waits':4,5
                                    'search_combo'  '00singer':10 'a':2A,15 'dead':3A 'dragging':1A 'earth':9C 'eos':12 'ifs':16 'night':7C 'on':8C 'priest':4A 'songwriter':11 'tom':5B 'waits':6B,13,14
                                    'tag_tracknum'  12
                                      'num_images'  1
                                             'key'  2B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-1', 'q-syn-2', 'q-chart-4', 'q-other-4', 'Q-HAP-2', 'q-bass-2', 'q-grit-3']
                                      'lastfmtags'  ['blues', 'rock', 'alternative', 'experimental', 'singer songwriter']
                                        'tag_date'  1991
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1639508267.4304962  (2021-12-14 19:57:47)
                             'size'  4851212