======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '443'
                                          'artist'  'The Beatles'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Paperback Writer (remix)'
                                           'quals'  ("['Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-4', "
 "'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', 'q-mixbeat-2']")
                                      'lastfmtags'  "['pop', 'rock', '60s', 'british', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1965'
                                        'comments'  ''
                                           'genre'  'rock-unsorted'
                                             'bpm'  '93.3'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'APIC:Cover Image'                                  type PictureType.COVER_FRONT (Cover (front)) b'Cover Image'
                                     
'POPM:\x01ÿþ3'                                      POPM(email='\x01ÿþ3', rating=102, count=0)
'TBPM' (BPM (beats per minute))                     '93.3'
'TCON' (Content type, a.k.a. Genre)                 'rock-unsorted'
'TDRC' (Recording time)                             '1965'
'TIT2' (Title/songname/content description)         'Paperback Writer (remix)'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Beatles'
'TXXX:FMPS_Rating'                                  '0.4'
'TXXX:MP3GAIN_MINMAX'                               '000,190'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['pop', 'rock', '60s', 'british', 'classic rock']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.01 dB'
'TXXX:replaygain_track_peak'                        '0.986636'

========================== row from database ==========================
                                              'id'  1316160
                                            'path'  /data/Music/Bulk/00poprockelectronic/The Beatles/The Beatles__cifs9c6.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  443
                                           'genre'  rock-unsorted
                                        'filesize'  10709431
                                           'mtime'  1620391993
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Beatles__cifs9c6 rock unsorted
                                      'tag_artist'  The Beatles
                                     'tag_release'  None
                                       'tag_title'  Paperback Writer (remix)
                                             'bpm'  93.3
                                    'search_title'  'paperback':1 'remix':3,4 'writer':2
                                   'search_artist'  'beatles':2 'the':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'beatles':2 'cifs9c6':3 'rock':4 'unsorted':5
                                    'search_combo'  '00poprockelectronic':7 'beatles':6B,8 'cifs9c6':9 'paperback':1A 'remix':3A,4A 'rock':10 'the':5B 'unsorted':11 'writer':2A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-2', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['pop', 'rock', '60s', 'british', 'classic rock']
                                        'tag_date'  1965
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620391992.711422  (2021-05-07 14:53:12)
                             'size'  10709431