======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '166'
                                          'artist'  'Zez Confrey'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Are You Playing Fair (Orchestra)'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'Q-PLAY-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-1', 'q-drums-1', 'q-other-4', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['1301fh', 'ragtime', 'jazz', 'piano', 'classical']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1922'
                                        'comments'  ''
                                           'genre'  'prerock-ragtime'
                                             'bpm'  '108.0'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TBPM' (BPM (beats per minute))                     '108.0'
'TCON' (Content type, a.k.a. Genre)                 'prerock-ragtime'
'TDRC' (Recording time)                             '1922-06'
'TIT2' (Title/songname/content description)         'Are You Playing Fair (Orchestra)'
'TKEY' (Initial key)                                '1A'
'TLEN' (Length)                                     '166000'
'TPE1' (Lead performer(s)/Soloist(s))               'Zez Confrey'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ['1301fh', 'ragtime', 'jazz', 'piano', 'classical']
'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-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.34 dB'
'TXXX:replaygain_track_peak'                        '0.686302'

========================== row from database ==========================
                                              'id'  1458844
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1922/Zez Confrey - Are You Playing Fair (Orchestra) -6-1922.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  166
                                           'genre'  prerock-ragtime
                                        'filesize'  4171925
                                           'mtime'  1620527193
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1922 6 1922 prerock ragtime
                                      'tag_artist'  Zez Confrey
                                     'tag_release'  None
                                       'tag_title'  Are You Playing Fair (Orchestra)
                                             'bpm'  108.0
                                    'search_title'  'are':1 'fair':4 'orchestra':5,6 'playing':3 'you':2
                                   'search_artist'  'confrey':2 'zez':1
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1922':6 '6':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8 'ragtime':9
                                    'search_combo'  '00oldiepop':13 '1922':14 '6':15 'are':1A 'confrey':8B 'country':12 'exotica':10 'fair':4A 'jazz':9 'oldies':11 'orchestra':5A,6A 'playing':3A 'prerock':16 'ragtime':17 'you':2A 'zez':7B
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['1301fh', 'ragtime', 'jazz', 'piano', 'classical']
                                        'tag_date'  1922
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620527193.334376  (2021-05-09 04:26:33)
                             'size'  4171925