======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '148'
                                          'artist'  'Nora Bayes'
                                     'text_people'  ''
                                         'release'  '[non-album tracks]'
                                           'title'  "How Ya Gonna Keep 'em Down On The Farm"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', '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-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['vaudeville', '20s', 'female vocalists', 'all', '10s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1918'
                                        'comments'  ''
                                           'genre'  'prerock-vaudeville'
                                             'bpm'  '112.2'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TALB' (Album/Movie/Show title)                     '[non-album tracks]'
'TBPM' (BPM (beats per minute))                     '112.2'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vaudeville'
'TDRC' (Recording time)                             '1918-12-21'
'TIT2' (Title/songname/content description)         "How Ya Gonna Keep 'em Down On The Farm"
'TKEY' (Initial key)                                '1B'
'TLEN' (Length)                                     '148000'
'TPE1' (Lead performer(s)/Soloist(s))               'Nora Bayes'
'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'                                   ['vaudeville', '20s', 'female vocalists', 'all', '10s']
'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'                                      '3'
'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'                        '0.573691'

========================== row from database ==========================
                                              'id'  1501807
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1918/Nora Bayes - How Ya Gonna Keep _Em Down On The Farm 21-12-1918.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  148
                                           'genre'  prerock-vaudeville
                                        'filesize'  3008596
                                           'mtime'  1620666290
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1918 _Em 21 12 1918 prerock vaudeville
                                      'tag_artist'  Nora Bayes
                                     'tag_release'  [non-album tracks]
                                       'tag_title'  How Ya Gonna Keep 'em Down On The Farm
                                             'bpm'  112.2
                                    'search_title'  'down':7 'em':5,6 'farm':10 'gonna':3 'how':1 'keep':4 'on':8 'the':9 'ya':2
                                   'search_artist'  'bayes':2 'nora':1
                                  'search_release'  'album':2 'non':1 'nonalbum':3 'tracks':4,5
                                     'search_rest'  '00oldiepop':5 '1918':6 '21':8 'country':4 'em':7 'exotica':2 'jazz':1 'oldies':3 'prerock':9 'vaudeville':10
                                    'search_combo'  '00oldiepop':22 '1918':23 '21':25 'album':14C 'bayes':12B 'country':21 'down':7A 'em':5A,6A,24 'exotica':19 'farm':10A 'gonna':3A 'how':1A 'jazz':18 'keep':4A 'non':13C 'nonalbum':15C 'nora':11B 'oldies':20 'on':8A 'prerock':26 'the':9A 'tracks':16C,17C 'vaudeville':27 'ya':2A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  1B
                                           '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-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['vaudeville', '20s', 'female vocalists', 'all', '10s']
                                        'tag_date'  1918
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620666290.2131634  (2021-05-10 19:04:50)
                             'size'  3008596