======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '233'
                                          'artist'  '[unknown]'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Kolo Iz Dubrave'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-UNU-3', 'Q-OLDST-1', "
 "'Q-LOCALNESS-4', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-eur-yugoslavia'
                                             'bpm'  '139.754'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '139.754'
'TCON' (Content type, a.k.a. Genre)                 'loc-eur-yugoslavia'
'TIT2' (Title/songname/content description)         'Kolo Iz Dubrave'
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               '[unknown]'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '4'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '3'
'TXXX:q-bass'                                       '4'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.52 dB'
'TXXX:replaygain_track_peak'                        '0.752551'

========================== row from database ==========================
                                              'id'  1491661
                                            'path'  /data/Music/Bulk/00localcharacter/00mid-north-europe/00dutch/Kolo iz dubrave.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  233
                                           'genre'  loc-eur-yugoslavia
                                        'filesize'  3742110
                                           'mtime'  1621627045
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00mid north europe 00dutch iz dubrave loc eur yugoslavia
                                      'tag_artist'  [unknown]
                                     'tag_release'  None
                                       'tag_title'  Kolo Iz Dubrave
                                             'bpm'  139.754
                                    'search_title'  'dubrave':3 'iz':2 'kolo':1
                                   'search_artist'  'unknown':1,2
                                  'search_release'  
                                     'search_rest'  '00dutch':4 '00mid':1 'dubrave':6 'eur':8 'europe':3 'iz':5 'loc':7 'north':2 'yugoslavia':9
                                    'search_combo'  '00dutch':9 '00mid':6 'dubrave':3A,11 'eur':13 'europe':8 'iz':2A,10 'kolo':1A 'loc':12 'north':7 'unknown':4B,5B 'yugoslavia':14
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-4', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621627044.6749122  (2021-05-21 21:57:24)
                             'size'  3742110