======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '188'
                                          'artist'  'Lew Stone'
                                     'text_people'  ''
                                         'release'  'Decca F 7685'
                                           'title'  'Loveless Love (careless Love) (vocal - Frenchy Sartell)'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['british dance bands', 'jazz', 'swing']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1940'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '109.764'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Decca F 7685'
'TBPM' (BPM (beats per minute))                     '109.764'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1940'
'TIT2' (Title/songname/content description)         'Loveless Love (careless Love) (vocal - Frenchy Sartell)'
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               'Lew Stone'
'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:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ['british dance bands', 'jazz', 'swing']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.44 dB'
'TXXX:replaygain_track_peak'                        '0.548590'

========================== row from database ==========================
                                              'id'  1450473
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1940/Lew Stone - Loveless Love (Careless Love) (vocal - Frenchy Sartell) 14-11-1940.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  188
                                           'genre'  prerock-swing
                                        'filesize'  3776178
                                           'mtime'  1620561643
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1940 (Careless 14 11 1940 prerock swing
                                      'tag_artist'  Lew Stone
                                     'tag_release'  Decca F 7685
                                       'tag_title'  Loveless Love (careless Love) (vocal - Frenchy Sartell)
                                             'bpm'  109.764
                                    'search_title'  'careless':3,4 'frenchy':8 'love':2,5 'loveless':1 'sartell':9,10 'vocal':6,7
                                   'search_artist'  'lew':1 'stone':2
                                  'search_release'  '7685':3 'decca':1 'f':2
                                     'search_rest'  '00oldiepop':5 '1940':6 'careless':7,8 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 'swing':10
                                    'search_combo'  '00oldiepop':20 '1940':21 '7685':15C 'careless':3A,4A,22,23 'country':19 'decca':13C 'exotica':17 'f':14C 'frenchy':8A 'jazz':16 'lew':11B 'love':2A,5A 'loveless':1A 'oldies':18 'prerock':24 'sartell':9A,10A 'stone':12B 'swing':25 'vocal':6A,7A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-1', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['british dance bands', 'jazz', 'swing']
                                        'tag_date'  1940
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620561643.1164787  (2021-05-09 14:00:43)
                             'size'  3776178