======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '66'
                                          'artist'  'Eggblood'
                                     'text_people'  ''
                                         'release'  'Classwar Karaoke - 0021 Survey'
                                           'title'  'A Slow Downer'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', '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-1', 'Q-HHRNBTT-1', 'q-mixbeat-1', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['illbient']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '31'
                                      'tracktotal'  ''
                                            'date'  '2013'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '133.9'
                                             'key'  '6A'
                                        '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))                     '133.9'
'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)         'A Slow Downer'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Eggblood'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '31'
'TXXX:Access Rating'                                '10'
'TXXX:Dynamic Range (DR)'                           '6'
'TXXX:Dynamic Range (R128)'                         '6.8787097930908203'
'TXXX:Peak Level (R128)'                            '+0.6 dBTP; +0.6 Left; +0.1 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)'                          '-15.783329963684082'
'TXXX:Volume Level (ReplayGain)'                    '-10.783329963684082'
'TXXX:lastfmtags'                                   'illbient'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '+10.29 dB'
'TXXX:replaygain_track_peak'                        '0.099331'

========================== row from database ==========================
                                              'id'  1389515
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Various - Classwar Karaoke - 0021 Survey/31 - Eggblood - A Slow Downer.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  66
                                           'genre'  electronic-unsorted
                                        'filesize'  2711700
                                           'mtime'  1622758902
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Various 31 electronic unsorted
                                      'tag_artist'  Eggblood
                                     'tag_release'  Classwar Karaoke - 0021 Survey
                                       'tag_title'  A Slow Downer
                                             'bpm'  133.9
                                    'search_title'  'a':1 'downer':3 'slow':2
                                   'search_artist'  'eggblood':1
                                  'search_release'  'classwar':1 'karaoke':2 'survey':3
                                     'search_rest'  '31':2 'electronic':3 'unsorted':4 'various':1
                                    'search_combo'  '31':9 'a':1A 'classwar':5C 'downer':3A 'eggblood':4B 'electronic':10 'karaoke':6C 'slow':2A 'survey':7C 'unsorted':11 'various':8
                                    'tag_tracknum'  31
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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'  ['illbient']
                                        'tag_date'  2013
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622758901.708363  (2021-06-04 00:21:41)
                             'size'  2711700