======================== unified (from filesystem) ========================
                                         'bitrate'  '80.0'
                                        'duration'  '160'
                                          'artist'  'Bing Crosby'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  '"Marshmallow World, A"'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['crooners', 'jazz', 'christmas', 'oldies', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1950'
                                        'comments'  ''
                                           'genre'  'prerock-vocal;set-th-christmas'
                                             'bpm'  '112.758'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         ['Debuted 1/6/1951 and peaked at #24 on Various Charts. Source: Pop Hits. '
 'Label/Number: Decca 27230. \r\n',
 'Debuted 1950 and peaked at # on Various Charts. Label/Number: Decca 9-27230. '
 'Billboard Pop Charts (1940-1954)\r\n']
'COMM:ID3v1 Comment:XXX'                            'Debuted 1/6/1951 and peaked at'
'TBPM' (BPM (beats per minute))                     '112.758'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-vocal', 'set-th-christmas']
'TDRC' (Recording time)                             '1950'
'TIT2' (Title/songname/content description)         '"Marshmallow World, A"'
'TKEY' (Initial key)                                '4A'
'TLEN' (Length)                                     '0'
'TPE1' (Lead performer(s)/Soloist(s))               'Bing Crosby'
'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:lastfmtags'                                   ['crooners', 'jazz', 'christmas', 'oldies', 'swing']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.57 dB'
'TXXX:replaygain_track_peak'                        '0.392136'
'UFID:'                                             UFID(owner='', data=b'XL\x00 CH1950_015')

========================== row from database ==========================
                                              'id'  1516492
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1950/ch1950_015 - bing crosby - __marshmallow world, a__ 80 m (2.40).mp3
                                         'working'  None
                                         'bitrate'  80
                                    'duration_sec'  160
                                           'genre'  prerock-vocal;set-th-christmas
                                        'filesize'  1606117
                                           'mtime'  1621625741
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1950 ch1950_015 bing crosby __marshmallow world, a__ 80 (2.40) prerock vocal;set th christmas
                                      'tag_artist'  Bing Crosby
                                     'tag_release'  None
                                       'tag_title'  "Marshmallow World, A"
                                             'bpm'  112.758
                                    'search_title'  'a':4 'marshmallow':1 'world':2,3
                                   'search_artist'  'bing':1 'crosby':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '015':8 '1950':6 '2':16 '240':18 '40':17 '80':15 'a':14 'bing':9 'ch1950':7 'christmas':25 'country':4 'crosby':10 'exotica':2 'jazz':1 'marshmallow':11 'oldies':3 'prerock':19 'set':21,23 'th':24 'vocal':20,22 'world':12,13
                                    'search_combo'  '00oldiepop':11 '015':14 '1950':12 '2':22 '240':24 '40':23 '80':21 'a':4A,20 'bing':5B,15 'ch1950':13 'christmas':31 'country':10 'crosby':6B,16 'exotica':8 'jazz':7 'marshmallow':1A,17 'oldies':9 'prerock':25 'set':27,29 'th':30 'vocal':26,28 'world':2A,3A,18,19
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  4A
                                           '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-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['crooners', 'jazz', 'christmas', 'oldies', 'swing']
                                        'tag_date'  1950
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621625741.3886075  (2021-05-21 21:35:41)
                             'size'  1606117