======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '189'
                                          'artist'  'Ork. Henryka Warsa & Tadeusz Faliszewski'
                                     'text_people'  'A. Piotrowski / St. Mar'
                                         'release'  'tango in europe'
                                           'title'  'Ghetto'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-UNU-2', 'Q-LOCALNESS-3', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1933'
                                        'comments'  ''
                                           'genre'  'loc-style-tango or milonga'
                                             'bpm'  '99.763'
                                             'key'  '12A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'tango in europe'
'TBPM' (BPM (beats per minute))                     '99.763'
'TCOM' (Composer)                                   'A. Piotrowski / St. Mar'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-tango or milonga'
'TDRC' (Recording time)                             '1933'
'TIT2' (Title/songname/content description)         'Ghetto'
'TKEY' (Initial key)                                '12A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ork. Henryka Warsa & Tadeusz Faliszewski'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+3.39 dB'
'TXXX:replaygain_track_peak'                        '0.657113'

========================== row from database ==========================
                                              'id'  851240
                                            'path'  /data/Music/Bulk/00localcharacter/tango in europe (various)/Orkiestra Henryka Warsa & Tadeusz Faliszewski - Ghetto (1933).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  189
                                           'genre'  loc-style-tango or milonga
                                        'filesize'  3032252
                                           'mtime'  1620528484
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter (various) Orkiestra (1933) loc style or milonga
                                      'tag_artist'  Ork. Henryka Warsa & Tadeusz Faliszewski
                                     'tag_release'  tango in europe
                                       'tag_title'  Ghetto
                                             'bpm'  99.763
                                    'search_title'  'ghetto':1
                                   'search_artist'  'faliszewski':6 'henryka':3 'ork':1,2 'tadeusz':5 'warsa':4
                                  'search_release'  'europe':3 'in':2 'tango':1
                                     'search_rest'  '1933':4,5 'loc':6 'milonga':9 'or':8 'orkiestra':3 'style':7 'various':1,2
                                    'search_combo'  '1933':14,15 'europe':10C 'faliszewski':7B 'ghetto':1A 'henryka':4B 'in':9C 'loc':16 'milonga':19 'or':18 'ork':2B,3B 'orkiestra':13 'style':17 'tadeusz':6B 'tango':8C 'various':11,12 'warsa':5B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  12A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1933
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528484.4475899  (2021-05-09 04:48:04)
                             'size'  3032252