======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '199'
                                          'artist'  'Ramblers'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Weet Je Nog Wel Dien Avond In De Regen (vocal - Wim Poppink)'
                                           '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'  "['surf', 'instrumental', 'jazz', 'finnish', 'swing']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1940'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '104.498'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '104.498'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1940'
'TIT2' (Title/songname/content description)         'Weet Je Nog Wel Dien Avond In De Regen (vocal - Wim Poppink)'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ramblers'
'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'                                  'rock'
'TXXX:lastfmtags'                                   ['surf', 'instrumental', 'jazz', 'finnish', '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'                        '+2.75 dB'
'TXXX:replaygain_track_peak'                        '0.653580'

========================== row from database ==========================
                                              'id'  1447531
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1940/Ramblers - Weet Je Nog Wel Dien Avond In De Regen (vocal - Wim Poppink) 28-3-1940.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  199
                                           'genre'  prerock-swing
                                        'filesize'  3999538
                                           'mtime'  1620561650
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1940 28 3 1940 prerock swing
                                      'tag_artist'  Ramblers
                                     'tag_release'  None
                                       'tag_title'  Weet Je Nog Wel Dien Avond In De Regen (vocal - Wim Poppink)
                                             'bpm'  104.498
                                    'search_title'  'avond':6 'de':8 'dien':5 'in':7 'je':2 'nog':3 'poppink':13,14 'regen':9 'vocal':10,11 'weet':1 'wel':4 'wim':12
                                   'search_artist'  'ramblers':1
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1940':6 '28':7 '3':8 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 'swing':10
                                    'search_combo'  '00oldiepop':20 '1940':21 '28':22 '3':23 'avond':6A 'country':19 'de':8A 'dien':5A 'exotica':17 'in':7A 'jazz':16 'je':2A 'nog':3A 'oldies':18 'poppink':13A,14A 'prerock':24 'ramblers':15B 'regen':9A 'swing':25 'vocal':10A,11A 'weet':1A 'wel':4A 'wim':12A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           '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'  ['surf', 'instrumental', 'jazz', 'finnish', 'swing']
                                        'tag_date'  1940
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620561649.569837  (2021-05-09 14:00:49)
                             'size'  3999538