======================== unified (from filesystem) ========================
                                         'bitrate'  '208.323'
                                        'duration'  '283'
                                          'artist'  'The String Quartet'
                                     'text_people'  ''
                                         'release'  'Tribute to Weezer'
                                           'title'  'Across'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['classical', 'cover', 'covers', 'instrumental', 'tribute', 'strings']"
                                     'discogstags'  "['classical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '119.546'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'PRIV:AverageLevel:5\x18\x00\x00'                   PRIV(owner='AverageLevel', data=b'5\x18\x00\x00')
'PRIV:PeakValue:ib\x00\x00'                         PRIV(owner='PeakValue', data=b'ib\x00\x00')
'TALB' (Album/Movie/Show title)                     'Tribute to Weezer'
'TBPM' (BPM (beats per minute))                     '119.546'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TDRC' (Recording time)                             '2003'
'TENC' (Encoded by)                                 'EAC (Lame 3.96.1)'
'TIT2' (Title/songname/content description)         'Across'
'TKEY' (Initial key)                                '10A'
'TLAN' (Language(s))                                'English'
'TPE1' (Lead performer(s)/Soloist(s))               'The String Quartet'
'TRCK' (Track number/Position in set)               '7'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'classical'
'TXXX:lastfmtags'                                   ['classical', 'cover', 'covers', 'instrumental', 'tribute', 'strings']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'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'                        '-0.24 dB'
'TXXX:replaygain_track_peak'                        '0.384433'

========================== row from database ==========================
                                              'id'  1322842
                                            'path'  /data/Music/Bulk/00instruments-classical/The String Quartet/Weezer/07-The_String_Quartet-Across-BLEED.mp3
                                         'working'  None
                                         'bitrate'  208
                                    'duration_sec'  283
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  7398016
                                           'mtime'  1620561806
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical 07 The_String_Quartet BLEED prerock classical or classical instruments
                                      'tag_artist'  The String Quartet
                                     'tag_release'  Tribute to Weezer
                                       'tag_title'  Across
                                             'bpm'  119.546
                                    'search_title'  'across':1
                                   'search_artist'  'quartet':3 'string':2 'the':1
                                  'search_release'  'to':2 'tribute':1 'weezer':3
                                     'search_rest'  '00instruments':1 'bleed':6 'classical':2 'instruments':9 'or':8 'prerock':7 'quartet':5 'string':4 'the':3
                                    'search_combo'  '00instruments':8 'across':1A 'bleed':13 'classical':9 'instruments':16 'or':15 'prerock':14 'quartet':4B,12 'string':3B,11 'the':2B,10 'to':6C 'tribute':5C 'weezer':7C
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['classical', 'cover', 'covers', 'instrumental', 'tribute', 'strings']
                                        'tag_date'  2003
                                     'discogstags'  ['classical']

============================== file details ==============================
                                           'mtime'  1620561805.791892  (2021-05-09 14:03:25)
                             'size'  7398016