======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '169'
                                          'artist'  'Bert Ambrose'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Johnny Zero (vocal - Anne Shelton)'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  '["20\'s", \'british dance band\', \'retro\', \'swing\']'
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1943'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '107.4'
                                             'key'  '7B'
                                        '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))                     '107.4'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1943-07-01'
'TIT2' (Title/songname/content description)         'Johnny Zero (vocal - Anne Shelton)'
'TKEY' (Initial key)                                '7B'
'TLEN' (Length)                                     '169000'
'TPE1' (Lead performer(s)/Soloist(s))               'Bert Ambrose'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ["20's", 'british dance band', 'retro', 'swing']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+2.17 dB'
'TXXX:replaygain_track_peak'                        '0.470858'

========================== row from database ==========================
                                              'id'  1473095
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1943/Bert Ambrose - Johnny Zero (vocal - Anne Shelton) 1-7-1943.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  169
                                           'genre'  prerock-swing
                                        'filesize'  3543208
                                           'mtime'  1620561865
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1943 1 7 1943 prerock swing
                                      'tag_artist'  Bert Ambrose
                                     'tag_release'  None
                                       'tag_title'  Johnny Zero (vocal - Anne Shelton)
                                             'bpm'  107.4
                                    'search_title'  'anne':5 'johnny':1 'shelton':6,7 'vocal':3,4 'zero':2
                                   'search_artist'  'ambrose':2 'bert':1
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1':7 '1943':6 '7':8 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 'swing':10
                                    'search_combo'  '00oldiepop':14 '1':16 '1943':15 '7':17 'ambrose':9B 'anne':5A 'bert':8B 'country':13 'exotica':11 'jazz':10 'johnny':1A 'oldies':12 'prerock':18 'shelton':6A,7A 'swing':19 'vocal':3A,4A 'zero':2A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ["20's", 'british dance band', 'retro', 'swing']
                                        'tag_date'  1943
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620561864.7480888  (2021-05-09 14:04:24)
                             'size'  3543208