======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '368'
                                          'artist'  'Paulo Chagas and Rosendo J. Rocha'
                                     'text_people'  ''
                                         'release'  'Classwar Karaoke - 0021 Survey'
                                           'title'  'Bug'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '71'
                                      'tracktotal'  ''
                                            'date'  '2013'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '86'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Classwar Karaoke - 0021 Survey'
'TBPM' (BPM (beats per minute))                     '86'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TCOP' (Copyright message)                          ('Attribution-Noncommercial-Sharealike: Http: / / Creativecommons.Org / '
 'Licenses / By-Nc-Sa / 3.0 /')
'TDRC' (Recording time)                             '2013'
'TIT2' (Title/songname/content description)         'Bug'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Paulo Chagas and Rosendo J. Rocha'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '71'
'TXXX:Access Rating'                                '10'
'TXXX:Dynamic Range (DR)'                           '10'
'TXXX:Dynamic Range (R128)'                         '9.2180995941162109'
'TXXX:Peak Level (R128)'                            '+0.3 dBTP; +0.3 Left; +0.2 Right'
'TXXX:Peak Level (Sample)'                          '+0.0 dB; +0.0 Left; +0.0 Right'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:Tool Name'                                    'Media Center'
'TXXX:Tool Version'                                 '20.0.131'
'TXXX:Volume Level (R128)'                          '-11.5501003265380859'
'TXXX:Volume Level (ReplayGain)'                    '-6.5500998497009277'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+8.50 dB'
'TXXX:replaygain_track_peak'                        '0.184642'

========================== row from database ==========================
                                              'id'  1387892
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Various - Classwar Karaoke - 0021 Survey/71 - Paulo Chagas and Rosendo J. Rocha - Bug.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  368
                                           'genre'  electronic-unsorted
                                        'filesize'  14794290
                                           'mtime'  1622758905
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Various 71 electronic unsorted
                                      'tag_artist'  Paulo Chagas and Rosendo J. Rocha
                                     'tag_release'  Classwar Karaoke - 0021 Survey
                                       'tag_title'  Bug
                                             'bpm'  86.0
                                    'search_title'  'bug':1
                                   'search_artist'  'and':3 'chagas':2 'j':5,6 'paulo':1 'rocha':7 'rosendo':4
                                  'search_release'  'classwar':1 'karaoke':2 'survey':3
                                     'search_rest'  '71':2 'electronic':3 'unsorted':4 'various':1
                                    'search_combo'  '71':13 'and':4B 'bug':1A 'chagas':3B 'classwar':9C 'electronic':14 'j':6B,7B 'karaoke':10C 'paulo':2B 'rocha':8B 'rosendo':5B 'survey':11C 'unsorted':15 'various':12
                                    'tag_tracknum'  71
                                      'num_images'  1
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  2013
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622758904.7278967  (2021-06-04 00:21:44)
                             'size'  14794290