======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '107'
                                          'artist'  'Paul Robeson'
                                     'text_people'  ''
                                         'release'  'Ballad for Americans'
                                           'title'  'The Minstrel Boy'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'Q-PLAY-2', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', "
 "'Q-PIANO-2', 'q-chart-2', 'q-drums-1', 'q-other-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['american', 'blues', 'spiritual', 'folk', 'gospel']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  '22'
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '103.642'
                                             'key'  '4B'
                                        'acoustid'  '87900a8c-a159-4112-a864-967fe9ace8d1'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'PRIV:AverageLevel:\x1a\x11\x00\x00'                PRIV(owner='AverageLevel', data=b'\x1a\x11\x00\x00')
'PRIV:PeakValue:þ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xfe\x7f\x00\x00')
'TALB' (Album/Movie/Show title)                     'Ballad for Americans'
'TBPM' (BPM (beats per minute))                     '103.642'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1935'
'TIT2' (Title/songname/content description)         'The Minstrel Boy'
'TKEY' (Initial key)                                '4B'
'TLEN' (Length)                                     '107088'
'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)               '6/22'
'TSO2'                                              'Robeson, Paul'
'TSOP' (Performer sort order)                       'Robeson, Paul'
'TXXX:ASIN'                                         'B000000ECS'
'TXXX:Acoustid Id'                                  '87900a8c-a159-4112-a864-967fe9ace8d1'
'TXXX:MusicBrainz Album Artist Id'                  'bbc5febe-0321-4bb2-adcd-8dafbf8d8841'
'TXXX:MusicBrainz Album Id'                         '0c791fb9-577c-43e7-ac71-d9fba5c341b4'
'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-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'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'                                      '1'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.76 dB'
'TXXX:replaygain_track_peak'                        '0.502140'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'834914de-4b54-4899-aa64-da79bcc3f801')

========================== row from database ==========================
                                              'id'  1529281
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/30_s collection/paul robeson - the minstrel boy.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  107
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  2156544
                                           'mtime'  1620527925
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 30_s collection paul robeson the minstrel boy prerock jb jazz unsorted
                                      'tag_artist'  Paul Robeson
                                     'tag_release'  Ballad for Americans
                                       'tag_title'  The Minstrel Boy
                                             'bpm'  103.642
                                    'search_title'  'boy':3 'minstrel':2 'the':1
                                   'search_artist'  'paul':1 'robeson':2
                                  'search_release'  'americans':3 'ballad':1 'for':2
                                     'search_rest'  '30':5 'boy':12 'collection':7 'country':4 'exotica':2 'jazz':1 'jb':14 'minstrel':11 'oldies':3 'paul':8 'prerock':13 'robeson':9 's':6 'the':10 'unsorted':15
                                    'search_combo'  '30':13 'americans':8C 'ballad':6C 'boy':3A,20 'collection':15 'country':12 'exotica':10 'for':7C 'jazz':9 'jb':22 'minstrel':2A,19 'oldies':11 'paul':4B,16 'prerock':21 'robeson':5B,17 's':14 'the':1A,18 'unsorted':23
                                    'tag_tracknum'  6
                                      'num_images'  1
                                             'key'  4B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['american', 'blues', 'spiritual', 'folk', 'gospel']
                                        'tag_date'  1935
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620527925.4616148  (2021-05-09 04:38:45)
                             'size'  2156544