======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '187'
                                          'artist'  'Lew Stone'
                                     'text_people'  ''
                                         'release'  'Decca F 6891'
                                           'title'  'Any Broken Hearts To Mend (vocal - Al Bowlly)'
                                           '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-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['british dance bands', 'jazz', 'swing']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1938'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '102.957'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Decca F 6891'
'TBPM' (BPM (beats per minute))                     '102.957'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1938'
'TIT2' (Title/songname/content description)         'Any Broken Hearts To Mend (vocal - Al Bowlly)'
'TKEY' (Initial key)                                '6A'
'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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.51 dB'
'TXXX:replaygain_track_peak'                        '0.652176'

========================== row from database ==========================
                                              'id'  1446150
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1938/Lew Stone - Any Broken Hearts To Mend (vocal - Al Bowlly) 28-11-1938.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  187
                                           'genre'  prerock-swing
                                        'filesize'  3753778
                                           'mtime'  1620561307
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1938 28 11 1938 prerock swing
                                      'tag_artist'  Lew Stone
                                     'tag_release'  Decca F 6891
                                       'tag_title'  Any Broken Hearts To Mend (vocal - Al Bowlly)
                                             'bpm'  102.957
                                    'search_title'  'al':8 'any':1 'bowlly':9,10 'broken':2 'hearts':3 'mend':5 'to':4 'vocal':6,7
                                   'search_artist'  'lew':1 'stone':2
                                  'search_release'  '6891':3 'decca':1 'f':2
                                     'search_rest'  '00oldiepop':5 '1938':6 '28':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8 'swing':9
                                    'search_combo'  '00oldiepop':20 '1938':21 '28':22 '6891':15C 'al':8A 'any':1A 'bowlly':9A,10A 'broken':2A 'country':19 'decca':13C 'exotica':17 'f':14C 'hearts':3A 'jazz':16 'lew':11B 'mend':5A 'oldies':18 'prerock':23 'stone':12B 'swing':24 'to':4A 'vocal':6A,7A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           '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-1', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['british dance bands', 'jazz', 'swing']
                                        'tag_date'  1938
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620561306.7609801  (2021-05-09 13:55:06)
                             'size'  3753778