======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '70'
                                          'artist'  'Sestry Fedorovy'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Na rechke'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-2', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-russia'
                                             'bpm'  '86.994'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'PRIV:AverageLevel:I\n\x00\x00'                     PRIV(owner='AverageLevel', data=b'I\n\x00\x00')
'PRIV:PeakValue:äJ\x00\x00'                         PRIV(owner='PeakValue', data=b'\xe4J\x00\x00')
'PRIV:WM/MediaClassPrimaryID:¼}`Ñ#ãâK\x86¡H¤*(D\x1e'  PRIV(owner='WM/MediaClassPrimaryID', data=b'\xbc}`\xd1#\xe3\xe2K\x86\xa1H\xa4*(D\x1e')
'PRIV:WM/MediaClassSecondaryID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/MediaClassSecondaryID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'TBPM' (BPM (beats per minute))                     '86.994'
'TCON' (Content type, a.k.a. Genre)                 'loc-russia'
'TIT2' (Title/songname/content description)         'Na rechke'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Sestry Fedorovy'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.08 dB'
'TXXX:replaygain_track_peak'                        '0.491299'

========================== row from database ==========================
                                              'id'  766760
                                            'path'  /data/Music/Bulk/00localcharacter/Sestry_Fedorovy/Sestry Fedorovy - Na rechke.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  70
                                           'genre'  loc-russia
                                        'filesize'  1127472
                                           'mtime'  1621629770
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter Sestry_Fedorovy loc russia
                                      'tag_artist'  Sestry Fedorovy
                                     'tag_release'  None
                                       'tag_title'  Na rechke
                                             'bpm'  86.994
                                    'search_title'  'na':1 'rechke':2
                                   'search_artist'  'fedorovy':2 'sestry':1
                                  'search_release'  
                                     'search_rest'  'fedorovy':2 'loc':3 'russia':4 'sestry':1
                                    'search_combo'  'fedorovy':4B,6 'loc':7 'na':1A 'rechke':2A 'russia':8 'sestry':3B,5
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621629769.6052637  (2021-05-21 22:42:49)
                             'size'  1127472