======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '184'
                                          'artist'  'Duke Ellington & His Famous Orchestra'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  '132 Sentimental lady - Duke Ellington & His Famous Orchestra (13-11-1943)'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'Q-PLAY-2', 'q-bass-2', 'q-busy-3', 'q-grit-1', "
 "'Q-PIANO-2', 'q-chart-2', 'q-drums-1', 'q-other-3', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'swing', 'big band', 'piano', 'blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '132'
                                      'tracktotal'  ''
                                            'date'  '1943'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '135.819'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '135.819'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1943'
'TIT2' (Title/songname/content description)         '132 Sentimental lady - Duke Ellington & His Famous Orchestra (13-11-1943)'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Duke Ellington & His Famous Orchestra'
'TRCK' (Track number/Position in set)               '132'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['jazz', 'swing', 'big band', 'piano', 'blues']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.82 dB'
'TXXX:replaygain_track_peak'                        '0.341448'

========================== row from database ==========================
                                              'id'  1454915
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1943/132 Sentimental lady - Duke Ellington & His Famous Orchestra (13-11-1943).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  184
                                           'genre'  prerock-band
                                        'filesize'  2962518
                                           'mtime'  1620561055
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop prerock band
                                      'tag_artist'  Duke Ellington & His Famous Orchestra
                                     'tag_release'  None
                                       'tag_title'  132 Sentimental lady - Duke Ellington & His Famous Orchestra (13-11-1943)
                                             'bpm'  135.819
                                    'search_title'  '11':10 '13':9 '13111943':12 '132':1 '1943':11 'duke':4 'ellington':5 'famous':7 'his':6 'lady':3 'orchestra':8 'sentimental':2
                                   'search_artist'  'duke':1 'ellington':2 'famous':4 'his':3 'orchestra':5
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 'band':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':6
                                    'search_combo'  '00oldiepop':22 '11':10A '13':9A '13111943':12A '132':1A '1943':11A 'band':24 'country':21 'duke':4A,13B 'ellington':5A,14B 'exotica':19 'famous':7A,16B 'his':6A,15B 'jazz':18 'lady':3A 'oldies':20 'orchestra':8A,17B 'prerock':23 'sentimental':2A
                                    'tag_tracknum'  132
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['jazz', 'swing', 'big band', 'piano', 'blues']
                                        'tag_date'  1943
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620561054.8801413  (2021-05-09 13:50:54)
                             'size'  2962518