======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '92'
                                          'artist'  'Sestry Fedorovy'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Pri narode v khorovode'
                                           'quals'  ("['Q-OLDST-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', "
 "'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-1', "
 "'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'  ''
                                        'comments'  ''
                                           'genre'  'loc-unsorted'
                                             'bpm'  '135.004'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '135.004'
'TCON' (Content type, a.k.a. Genre)                 'loc-unsorted'
'TIT2' (Title/songname/content description)         'Pri narode v khorovode'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Sestry Fedorovy'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'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'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.95 dB'
'TXXX:replaygain_track_peak'                        '0.484164'

========================== row from database ==========================
                                              'id'  765481
                                            'path'  /data/Music/Bulk/00localcharacter/Sestry_Fedorovy/Sestry Fedorovy - Pri narode v khorovode.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  92
                                           'genre'  loc-unsorted
                                        'filesize'  2964355
                                           'mtime'  1620401345
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter Sestry_Fedorovy loc unsorted
                                      'tag_artist'  Sestry Fedorovy
                                     'tag_release'  None
                                       'tag_title'  Pri narode v khorovode
                                             'bpm'  135.004
                                    'search_title'  'khorovode':4 'narode':2 'pri':1 'v':3
                                   'search_artist'  'fedorovy':2 'sestry':1
                                  'search_release'  
                                     'search_rest'  'fedorovy':2 'loc':3 'sestry':1 'unsorted':4
                                    'search_combo'  'fedorovy':6B,8 'khorovode':4A 'loc':9 'narode':2A 'pri':1A 'sestry':5B,7 'unsorted':10 'v':3A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', '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-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620401345.0198333  (2021-05-07 17:29:05)
                             'size'  2964355