======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '352'
                                          'artist'  'Abdul Kadar'
                                     'text_people'  ''
                                         'release'  'Inside Afghanistan'
                                           'title'  'Caravan Song'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-3', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-1', "
 "'Q-LOCALNESS-4', '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']")
                                      'lastfmtags'  "['afghan', 'folk', 'traditional', 'male vocalists', 'afghanistan']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '05'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'loc-asia-afghanistan'
                                             'bpm'  '146.000'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Inside Afghanistan'
'TBPM' (BPM (beats per minute))                     '146.000'
'TCON' (Content type, a.k.a. Genre)                 'loc-asia-afghanistan'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Caravan Song'
'TKEY' (Initial key)                                '9A'
'TLEN' (Length)                                     '352000'
'TPE1' (Lead performer(s)/Soloist(s))               'Abdul Kadar'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '05'
'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:lastfmtags'                                   ['afghan', 'folk', 'traditional', 'male vocalists', 'afghanistan']
'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'                        '+1.73 dB'
'TXXX:replaygain_track_peak'                        '0.785923'

========================== row from database ==========================
                                              'id'  1394308
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/va - inside afghanistan/05 - abdul kadar - caravan song.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  352
                                           'genre'  loc-asia-afghanistan
                                        'filesize'  5644160
                                           'mtime'  1636910273
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia inside afghanistan 05 abdul kadar caravan song loc asia afghanistan
                                      'tag_artist'  Abdul Kadar
                                     'tag_release'  Inside Afghanistan
                                       'tag_title'  Caravan Song
                                             'bpm'  146.0
                                    'search_title'  'caravan':1 'song':2
                                   'search_artist'  'abdul':1 'kadar':2
                                  'search_release'  'afghanistan':2 'inside':1
                                     'search_rest'  '00asia':1 'abdul':4 'afghanistan':3 'asia':9 'caravan':6 'inside':2 'kadar':5 'loc':8 'song':7
                                    'search_combo'  '00asia':7 'abdul':3B,10 'afghanistan':6C,9 'asia':15 'caravan':1A,12 'inside':5C,8 'kadar':4B,11 'loc':14 'song':2A,13
                                    'tag_tracknum'  5
                                      'num_images'  1
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['afghan', 'folk', 'traditional', 'male vocalists', 'afghanistan']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636910273.4917045  (2021-11-14 18:17:53)
                             'size'  5644160