======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '123'
                                          'artist'  'Paul Robeson'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'The Blind Ploughman'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['american', 'blues', 'spiritual', 'folk', 'gospel']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '16'
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '107.951'
                                             'key'  '4B'
                                        'acoustid'  '400e6064-3e29-43aa-a255-8b2f3f2579dd'
rest: ''

======================== rawer (from filesystem) ========================

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'PRIV:AverageLevel:\x00\x14\x00\x00'                PRIV(owner='AverageLevel', data=b'\x00\x14\x00\x00')
'PRIV:PeakValue:þ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xfe\x7f\x00\x00')
'TBPM' (BPM (beats per minute))                     '107.951'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1935'
'TIT2' (Title/songname/content description)         'The Blind Ploughman'
'TKEY' (Initial key)                                '4B'
'TLEN' (Length)                                     '123689'
'TPE1' (Lead performer(s)/Soloist(s))               'Paul Robeson'
'TPE2' (Band/orchestra/accompaniment)               'Paul Robeson'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '3/16'
'TSO2'                                              'Robeson, Paul'
'TSOP' (Performer sort order)                       'Robeson, Paul'
'TXXX:Acoustid Id'                                  '400e6064-3e29-43aa-a255-8b2f3f2579dd'
'TXXX:MusicBrainz Album Artist Id'                  'bbc5febe-0321-4bb2-adcd-8dafbf8d8841'
'TXXX:MusicBrainz Album Id'                         'a5f6e42c-b333-4e36-b2fe-d1b3eb2043d9'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'compilation'
'TXXX:MusicBrainz Artist Id'                        'bbc5febe-0321-4bb2-adcd-8dafbf8d8841'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['american', 'blues', 'spiritual', 'folk', 'gospel']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.11 dB'
'TXXX:replaygain_track_peak'                        '0.507200'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'fc035248-7869-4f91-8ad6-504c072cc04e')

========================== row from database ==========================
                                              'id'  1524829
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/30_s collection/paul robeson - the blind ploughman.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  123
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  1994752
                                           'mtime'  1620527921
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 30_s collection paul robeson the blind ploughman prerock jb jazz unsorted
                                      'tag_artist'  Paul Robeson
                                     'tag_release'  None
                                       'tag_title'  The Blind Ploughman
                                             'bpm'  107.951
                                    'search_title'  'blind':2 'ploughman':3 'the':1
                                   'search_artist'  'paul':1 'robeson':2
                                  'search_release'  
                                     'search_rest'  '30':5 'blind':11 'collection':7 'country':4 'exotica':2 'jazz':1 'jb':14 'oldies':3 'paul':8 'ploughman':12 'prerock':13 'robeson':9 's':6 'the':10 'unsorted':15
                                    'search_combo'  '30':10 'blind':2A,16 'collection':12 'country':9 'exotica':7 'jazz':6 'jb':19 'oldies':8 'paul':4B,13 'ploughman':3A,17 'prerock':18 'robeson':5B,14 's':11 'the':1A,15 'unsorted':20
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  4B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['american', 'blues', 'spiritual', 'folk', 'gospel']
                                        'tag_date'  1935
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620527920.9736898  (2021-05-09 04:38:40)
                             'size'  1994752