======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '175'
                                          'artist'  'Kay Kyser and his Kollege of Musical Knowledge, Lucyann Polk'
                                     'text_people'  ''
                                         'release'  '20s and 30s popular'
                                           'title'  "You're The Cause Of It All"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-2', '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-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '100.058'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     '20s and 30s popular'
'TBPM' (BPM (beats per minute))                     '100.058'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1935'
'TIT2' (Title/songname/content description)         "You're The Cause Of It All"
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Kay Kyser and his Kollege of Musical Knowledge, Lucyann Polk'
'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:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'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'                        '+2.46 dB'
'TXXX:replaygain_track_peak'                        '0.303160'

========================== row from database ==========================
                                              'id'  1503137
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920s and 1930s popular/Kay Kyser and his Kollege of Musical Knowledge, Lucyann Polk - You_re The Cause Of It All.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  175
                                           'genre'  prerock-swing
                                        'filesize'  2840675
                                           'mtime'  1620559651
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1920s 1930s You_re prerock swing
                                      'tag_artist'  Kay Kyser and his Kollege of Musical Knowledge, Lucyann Polk
                                     'tag_release'  20s and 30s popular
                                       'tag_title'  You're The Cause Of It All
                                             'bpm'  100.058
                                    'search_title'  'all':8 'cause':5 'it':7 'of':6 're':2 'the':4 'you':1 'youre':3
                                   'search_artist'  'and':3 'his':4 'kay':1 'knowledge':8,9 'kollege':5 'kyser':2 'lucyann':10 'musical':7 'of':6 'polk':11
                                  'search_release'  '20s':1 '30s':3 'and':2 'popular':4
                                     'search_rest'  '00oldiepop':5 '1920s':6 '1930s':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':10 're':9 'swing':11 'you':8
                                    'search_combo'  '00oldiepop':28 '1920s':29 '1930s':30 '20s':20C '30s':22C 'all':8A 'and':11B,21C 'cause':5A 'country':27 'exotica':25 'his':12B 'it':7A 'jazz':24 'kay':9B 'knowledge':16B,17B 'kollege':13B 'kyser':10B 'lucyann':18B 'musical':15B 'of':6A,14B 'oldies':26 'polk':19B 'popular':23C 'prerock':33 're':2A,32 'swing':34 'the':4A 'you':1A,31 'youre':3A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  8A
                                           '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-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1935
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620559650.7072582  (2021-05-09 13:27:30)
                             'size'  2840675