======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '428'
                                          'artist'  'Kino'
                                     'text_people'  ''
                                         'release'  'Picture'
                                           'title'  'Holding On'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['russian', 'post punk', 'progressive rock', 'russian rock', 'rock']"
                                     'discogstags'  "['indie pop', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive'
                                             'bpm'  '99.763'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Picture'
'TBPM' (BPM (beats per minute))                     '99.763'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-progressive'
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'Holding On'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Kino'
'TRCK' (Track number/Position in set)               '9'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['indie pop', 'pop']
'TXXX:lastfmtags'                                   ['russian', 'post punk', 'progressive rock', 'russian rock', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+1.34 dB'
'TXXX:replaygain_track_peak'                        '0.426454'

========================== row from database ==========================
                                              'id'  1414145
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/Kino/09. Holding On.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  428
                                           'genre'  rock-cppex-progressive
                                        'filesize'  17145554
                                           'mtime'  1620736202
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy 09. rock cppex progressive
                                      'tag_artist'  Kino
                                     'tag_release'  Picture
                                       'tag_title'  Holding On
                                             'bpm'  99.763
                                    'search_title'  'holding':1 'on':2
                                   'search_artist'  'kino':1
                                  'search_release'  'picture':1
                                     'search_rest'  '09':2,3 'classicprogpsy':1 'cppex':5 'progressive':6 'rock':4
                                    'search_combo'  '09':6,7 'classicprogpsy':5 'cppex':9 'holding':1A 'kino':3B 'on':2A 'picture':4C 'progressive':10 'rock':8
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['russian', 'post punk', 'progressive rock', 'russian rock', 'rock']
                                        'tag_date'  2005
                                     'discogstags'  ['indie pop', 'pop']

============================== file details ==============================
                                           'mtime'  1620736201.8556364  (2021-05-11 14:30:01)
                             'size'  17145554