======================== unified (from filesystem) ========================
                                         'bitrate'  '80.0'
                                        'duration'  '366'
                                          'artist'  'miles davis & quincy jones'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  ''
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-UNU-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', "
 "'q-grit-2', 'q-play-2', 'Q-OLDST-1', 'q-chart-2', 'q-drums-2', 'q-other-4', "
 "'q-piano-1', 'q-vocals-1', 'Q-HHRNBTT-1', 'q-mixbeat-1', 'Q-LOCALNESS-2']")
                                      'lastfmtags'  "['jazz', 'trumpet', 'big band']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '1957'
                                        'comments'  ''
                                           'genre'  'prerock-jb-unsorted'
                                             'bpm'  '120.758'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            '5'
'COMM:MusicMatch_Path:XXX'                          'C:\\1Lon\\MP3\\Video background\\miles davis - blues for pablo.mp3'
'COMM:MusicMatch_Preference:XXX'                    '5'
'COMM:MusicMatch_Serial:XXX'                        '15DA657'
'TBPM' (BPM (beats per minute))                     '120.758'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-unsorted'
'TDRC' (Recording time)                             '1957'
'TKEY' (Initial key)                                '6B'
'TLEN' (Length)                                     '365000'
'TPE1' (Lead performer(s)/Soloist(s))               'miles davis & quincy jones'
'TRCK' (Track number/Position in set)               '9'
'TXXX:ALBUM'                                        'live at montreux'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:TITLE'                                        'blues for pablo'
'TXXX:lastfmtags'                                   ['jazz', 'trumpet', 'big band']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+5.81 dB'
'TXXX:replaygain_track_peak'                        '0.933382'

========================== row from database ==========================
                                              'id'  1329218
                                            'path'  /data/Music/Bulk/00poprockelectronic/Miles Davis/Miles Ahead [1957]/Miles Davis - Blues For Pablo.mp3
                                         'working'  None
                                         'bitrate'  80
                                    'duration_sec'  366
                                           'genre'  prerock-jb-unsorted
                                        'filesize'  3667968
                                           'mtime'  1620540948
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Miles Davis Miles Ahead [1957] Miles Davis Blues For Pablo prerock jb unsorted
                                      'tag_artist'  miles davis & quincy jones
                                     'tag_release'  None
                                       'tag_title'  None
                                             'bpm'  120.758
                                    'search_title'  None
                                   'search_artist'  'davis':2 'jones':4 'miles':1 'quincy':3
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '1957':5,6 'ahead':4 'blues':7 'davis':3 'for':8 'jb':11 'miles':2 'pablo':9 'prerock':10 'unsorted':12
                                    'search_combo'  '00poprockelectronic':5 '1957':9,10 'ahead':8 'blues':11 'davis':2B,7 'for':12 'jb':15 'jones':4B 'miles':1B,6 'pablo':13 'prerock':14 'quincy':3B 'unsorted':16
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-2', 'q-piano-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['jazz', 'trumpet', 'big band']
                                        'tag_date'  1957
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620540948.220441  (2021-05-09 08:15:48)
                             'size'  3667968