======================== unified (from filesystem) ========================
                                         'bitrate'  '96.0'
                                        'duration'  '158'
                                          'artist'  'Mills Brothers'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Swing It, Sister'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-3', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'the', 'of', 'and', 'vocal jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '037'
                                      'tracktotal'  ''
                                            'date'  '1934'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-soft-easy'
                                             'bpm'  '106.252'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         ('Debuted 1934 and peaked at #2 on Various Charts.\r\n'
 'Source: Pop Memories 1890-1954 (1986 Edition).')
'COMM:ID3v1 Comment:XXX'                            'Debuted 1934 and peaked at #'
'TBPM' (BPM (beats per minute))                     '106.252'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-soft-easy'
'TDRC' (Recording time)                             '1934'
'TIT2' (Title/songname/content description)         'Swing It, Sister'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Mills Brothers'
'TPE2' (Band/orchestra/accompaniment)               'Mills Brothers'
'TRCK' (Track number/Position in set)               '037'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['jazz', 'the', 'of', 'and', 'vocal jazz']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '+6.61 dB'
'TXXX:replaygain_track_peak'                        '0.335717'
'UFID:'                                             UFID(owner='', data=b'XL\x00 1934_037')

========================== row from database ==========================
                                              'id'  676962
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1934/189 mills brothers - swing it sister.mp3
                                         'working'  None
                                         'bitrate'  96
                                    'duration_sec'  158
                                           'genre'  prerock-jb-jazz-soft-easy
                                        'filesize'  1903626
                                           'mtime'  1620526042
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1934 189 mills brothers swing it sister prerock jb jazz soft easy
                                      'tag_artist'  Mills Brothers
                                     'tag_release'  None
                                       'tag_title'  Swing It, Sister
                                             'bpm'  106.252
                                    'search_title'  'it':2,3 'sister':4 'swing':1
                                   'search_artist'  'brothers':2 'mills':1
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '189':7 '1934':6 'brothers':9 'country':4 'easy':16 'exotica':2 'it':11 'jazz':1 'jb':14 'mills':8 'oldies':3 'prerock':13 'sister':12 'soft':15 'swing':10
                                    'search_combo'  '00oldiepop':11 '189':13 '1934':12 'brothers':6B,15 'country':10 'easy':22 'exotica':8 'it':2A,3A,17 'jazz':7 'jb':20 'mills':5B,14 'oldies':9 'prerock':19 'sister':4A,18 'soft':21 'swing':1A,16
                                    'tag_tracknum'  37
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['jazz', 'the', 'of', 'and', 'vocal jazz']
                                        'tag_date'  1934
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620526042.2867908  (2021-05-09 04:07:22)
                             'size'  1903626