======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '194'
                                          'artist'  'Ork. M. Paszkieta & Tadeusz Miller'
                                     'text_people'  'Z. Białostockiego / J. Wrzos'
                                         'release'  'tango in europe'
                                           'title'  'Pie[D o Matce (A Song About Mother)'
                                           '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-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1946'
                                        'comments'  ''
                                           'genre'  'loc-style-tango or milonga'
                                             'bpm'  '113.836'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'tango in europe'
'TBPM' (BPM (beats per minute))                     '113.836'
'TCOM' (Composer)                                   'Z. Białostockiego / J. Wrzos'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-tango or milonga'
'TDRC' (Recording time)                             '1946'
'TIT2' (Title/songname/content description)         'Pie[D o Matce (A Song About Mother)'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ork. M. Paszkieta & Tadeusz Miller'
'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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.52 dB'
'TXXX:replaygain_track_peak'                        '0.513117'

========================== row from database ==========================
                                              'id'  851236
                                            'path'  /data/Music/Bulk/00localcharacter/tango in europe (various)/Ork. M. Paszkieta & Tadeusz Miller - Pieϖ o Matce (1946).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  194
                                           'genre'  loc-style-tango or milonga
                                        'filesize'  3121277
                                           'mtime'  1620528484
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter (various) Pieϖ (1946) loc style or milonga
                                      'tag_artist'  Ork. M. Paszkieta & Tadeusz Miller
                                     'tag_release'  tango in europe
                                       'tag_title'  Pie[D o Matce (A Song About Mother)
                                             'bpm'  113.836
                                    'search_title'  'a':6,7 'about':9 'd':2 'matce':5 'mother':10,11 'o':4 'pie':1 'pied':3 'song':8
                                   'search_artist'  'm':3,4 'miller':7 'ork':1,2 'paszkieta':5 'tadeusz':6
                                  'search_release'  'europe':3 'in':2 'tango':1
                                     'search_rest'  '1946':7,8 'loc':9 'milonga':12 'n':4,6 'or':11 'pie':3,5 'style':10 'various':1,2
                                    'search_combo'  '1946':28,29 'a':6A,7A 'about':9A 'd':2A 'europe':21C 'in':20C 'loc':30 'm':14B,15B 'matce':5A 'miller':18B 'milonga':33 'mother':10A,11A 'n':25,27 'o':4A 'or':32 'ork':12B,13B 'paszkieta':16B 'pie':1A,24,26 'pied':3A 'song':8A 'style':31 'tadeusz':17B 'tango':19C 'various':22,23
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           '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-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1946
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528483.8354142  (2021-05-09 04:48:03)
                             'size'  3121277