======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '185'
                                          'artist'  'Gracie Fields'
                                     'text_people'  'Lee / Weston'
                                         'release'  'Gracie Fields in Laughter and Song'
                                           'title'  "Will You Love Me When I'm Mutton"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'female vocalists', 'british', 'oldies', 'easy listening']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1934'
                                        'comments'  ''
                                           'genre'  'prerock-vocal-female'
                                             'bpm'  '88.865'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'PRIV:AverageLevel:Ï\x10\x00\x00'                   PRIV(owner='AverageLevel', data=b'\xcf\x10\x00\x00')
'PRIV:PeakValue:ÿ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xff\x7f\x00\x00')
'TALB' (Album/Movie/Show title)                     'Gracie Fields in Laughter and Song'
'TBPM' (BPM (beats per minute))                     '88.865'
'TCOM' (Composer)                                   'Lee / Weston'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal-female'
'TDRC' (Recording time)                             '1934'
'TENC' (Encoded by)                                 'Bygones'
'TIT2' (Title/songname/content description)         "Will You Love Me When I'm Mutton"
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Gracie Fields'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['jazz', 'female vocalists', 'british', 'oldies', 'easy listening']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.91 dB'
'TXXX:replaygain_track_peak'                        '0.631957'

========================== row from database ==========================
                                              'id'  1501827
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920s and 1930s popular/Gracie Fields - Will You Love Me When I_m Mutton 1934.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  185
                                           'genre'  prerock-vocal-female
                                        'filesize'  2988191
                                           'mtime'  1621625689
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1920s 1930s popular I_m 1934 prerock vocal female
                                      'tag_artist'  Gracie Fields
                                     'tag_release'  Gracie Fields in Laughter and Song
                                       'tag_title'  Will You Love Me When I'm Mutton
                                             'bpm'  88.865
                                    'search_title'  'i':6 'im':8 'love':3 'm':7 'me':4 'mutton':9 'when':5 'will':1 'you':2
                                   'search_artist'  'fields':2 'gracie':1
                                  'search_release'  'and':5 'fields':2 'gracie':1 'in':3 'laughter':4 'song':6
                                     'search_rest'  '00oldiepop':5 '1920s':6 '1930s':7 '1934':11 'country':4 'exotica':2 'female':14 'i':9 'jazz':1 'm':10 'oldies':3 'popular':8 'prerock':12 'vocal':13
                                    'search_combo'  '00oldiepop':22 '1920s':23 '1930s':24 '1934':28 'and':16C 'country':21 'exotica':19 'female':31 'fields':11B,13C 'gracie':10B,12C 'i':6A,26 'im':8A 'in':14C 'jazz':18 'laughter':15C 'love':3A 'm':7A,27 'me':4A 'mutton':9A 'oldies':20 'popular':25 'prerock':29 'song':17C 'vocal':30 'when':5A 'will':1A 'you':2A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['jazz', 'female vocalists', 'british', 'oldies', 'easy listening']
                                        'tag_date'  1934
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621625688.9931836  (2021-05-21 21:34:48)
                             'size'  2988191