======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '397'
                                          'artist'  'Alice Russell'
                                     'text_people'  ''
                                         'release'  'My Favourite Letters'
                                           'title'  'To Know This'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-OLDST-3', 'Q-HHRNBTT-3', 'Q-JZFKS-3', "
 "'Q-UNU-1', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['jazz', 'female vocalists', 'soul', 'funk', 'nu jazz']"
                                     'discogstags'  "['electronic', 'funk / soul', 'downtempo', 'soul', 'neo soul']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '06'
                                      'tracktotal'  '12'
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism'
                                             'bpm'  '84.596'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 00000310 000003D0 00002D74 000044F6 0003A9AE 0004BB07 00008000 00008000 '
 '00024A1E 00024A1E')
'TALB' (Album/Movie/Show title)                     'My Favourite Letters'
'TBPM' (BPM (beats per minute))                     '84.596'
'TCON' (Content type, a.k.a. Genre)                 'hip hop or rnb or rap or turntablism'
'TDRC' (Recording time)                             '2005'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Burst mode)'
'TIT2' (Title/songname/content description)         'To Know This'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Alice Russell'
'TRCK' (Track number/Position in set)               '06/12'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '3'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'funk / soul', 'downtempo', 'soul', 'neo soul']
'TXXX:lastfmtags'                                   ['jazz', 'female vocalists', 'soul', 'funk', 'nu jazz']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.88 dB'
'TXXX:replaygain_track_peak'                        '0.611942'

========================== row from database ==========================
                                              'id'  759673
                                            'path'  /data/Music/Bulk/00popandrock-hiphop-rap-rnb-turntablism/Alice Russell - TO KNOW THIS!.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  397
                                           'genre'  hip hop or rnb or rap or turntablism
                                        'filesize'  15958503
                                           'mtime'  1620586787
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock hiphop rap rnb turntablism TO KNOW THIS! hip hop or rnb or rap or turntablism
                                      'tag_artist'  Alice Russell
                                     'tag_release'  My Favourite Letters
                                       'tag_title'  To Know This
                                             'bpm'  84.596
                                    'search_title'  'know':2 'this':3 'to':1
                                   'search_artist'  'alice':1 'russell':2
                                  'search_release'  'favourite':2 'letters':3 'my':1
                                     'search_rest'  'hip':8 'hiphop':1 'hop':9 'know':6 'or':10 'rap':2 'rnb':3 'this':7 'to':5 'turntablism':4
                                    'search_combo'  'alice':4B 'favourite':7C 'hip':16 'hiphop':9 'hop':17 'know':2A,14 'letters':8C 'my':6C 'or':18 'rap':10 'rnb':11 'russell':5B 'this':3A,15 'to':1A,13 'turntablism':12
                                    'tag_tracknum'  6
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-3', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['jazz', 'female vocalists', 'soul', 'funk', 'nu jazz']
                                        'tag_date'  2005
                                     'discogstags'  ['electronic', 'funk / soul', 'downtempo', 'soul', 'neo soul']

============================== file details ==============================
                                           'mtime'  1620586787.1562526  (2021-05-09 20:59:47)
                             'size'  15958503