======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '190'
                                          'artist'  '6 or 7'
                                     'text_people'  ''
                                         'release'  'Classwar Karaoke - 0023 Survey'
                                           'title'  'Inexact Replies Mum'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'Q-PLAY-2', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-3', 'q-vocals-3', 'q-mixbeat-1', "
 "'Q-PIANO-2']")
                                      'lastfmtags'  "['classwar karaoke', 'avant garde']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '2013'
                                        'comments'  ''
                                           'genre'  'electronic-experimental'
                                             'bpm'  '124.0'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Classwar Karaoke - 0023 Survey'
'TBPM' (BPM (beats per minute))                     '124.0'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'electronic-experimental'
'TCOP' (Copyright message)                          ('Attribution-NonCommercial-ShareAlike: '
 'http://creativecommons.org/licenses/by-nc-sa/3.0/')
'TDRC' (Recording time)                             '2013'
'TIT2' (Title/songname/content description)         'Inexact Replies Mum'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               '6 or 7'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['classwar karaoke', 'avant garde']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.39 dB'
'TXXX:replaygain_track_peak'                        '0.634967'

========================== row from database ==========================
                                              'id'  1384299
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Klopenn - va - classwar karaoke [0023 survey]/6_or_7_-_03_-_Inexact_Replies_Mum.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  190
                                           'genre'  electronic-experimental
                                        'filesize'  4611276
                                           'mtime'  1622758942
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Klopenn va classwar karaoke [0023 survey] 6_or_7_ _03_ _Inexact_Replies_Mum electronic experimental
                                      'tag_artist'  6 or 7
                                     'tag_release'  Classwar Karaoke - 0023 Survey
                                       'tag_title'  Inexact Replies Mum
                                             'bpm'  124.0
                                    'search_title'  'inexact':1 'mum':3 'replies':2
                                   'search_artist'  '6':1 '7':3 'or':2
                                  'search_release'  'classwar':1 'karaoke':2 'survey':3
                                     'search_rest'  '0023':5,6 '03':12 '6':9 '7':11 'classwar':3 'electronic':16 'experimental':17 'inexact':13 'karaoke':4 'klopenn':1 'mum':15 'or':10 'replies':14 'survey':7,8 'va':2
                                    'search_combo'  '0023':14,15 '03':21 '6':4B,18 '7':6B,20 'classwar':7C,12 'electronic':25 'experimental':26 'inexact':1A,22 'karaoke':8C,13 'klopenn':10 'mum':3A,24 'or':5B,19 'replies':2A,23 'survey':9C,16,17 'va':11
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['classwar karaoke', 'avant garde']
                                        'tag_date'  2013
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622758942.2935133  (2021-06-04 00:22:22)
                             'size'  4611276