======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '167'
                                          'artist'  'Albert Harris'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Czy Tutaj Mieszka Panna Agnieszka (in Polish)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['melancholy', 'polish', '20s', '30s', 'retro']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1936'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '120.902'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '120.902'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1936'
'TIT2' (Title/songname/content description)         'Czy Tutaj Mieszka Panna Agnieszka (in Polish)'
'TKEY' (Initial key)                                '1B'
'TPE1' (Lead performer(s)/Soloist(s))               'Albert Harris'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['melancholy', 'polish', '20s', '30s', 'retro']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.78 dB'
'TXXX:replaygain_track_peak'                        '0.560047'

========================== row from database ==========================
                                              'id'  1453814
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1936/Albert Harris - Czy Tutaj Mieszka Panna Agnieszka (in Polish) 1936.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  167
                                           'genre'  prerock-unsorted
                                        'filesize'  3352370
                                           'mtime'  1621697991
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1936 1936 prerock unsorted
                                      'tag_artist'  Albert Harris
                                     'tag_release'  None
                                       'tag_title'  Czy Tutaj Mieszka Panna Agnieszka (in Polish)
                                             'bpm'  120.902
                                    'search_title'  'agnieszka':5 'czy':1 'in':6,7 'mieszka':3 'panna':4 'polish':8,9 'tutaj':2
                                   'search_artist'  'albert':1 'harris':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1936':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':7 'unsorted':8
                                    'search_combo'  '00oldiepop':16 '1936':17 'agnieszka':5A 'albert':10B 'country':15 'czy':1A 'exotica':13 'harris':11B 'in':6A,7A 'jazz':12 'mieszka':3A 'oldies':14 'panna':4A 'polish':8A,9A 'prerock':18 'tutaj':2A 'unsorted':19
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['melancholy', 'polish', '20s', '30s', 'retro']
                                        'tag_date'  1936
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621697990.5035133  (2021-05-22 17:39:50)
                             'size'  3352370