======================== unified (from filesystem) ========================
                                         'bitrate'  '231.568'
                                        'duration'  '317'
                                          'artist'  'Black Sabbath'
                                     'text_people'  ''
                                         'release'  'Master of Reality (Black Box: CD3)'
                                           'title'  'Children Of The Grave'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-4', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['classic rock', 'rock', 'hard rock', 'metal', 'heavy metal']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '04'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'eid-metal-heavy'
                                             'bpm'  '145.476'
                                             'key'  '12A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Master of Reality (Black Box: CD3)'
'TBPM' (BPM (beats per minute))                     '145.476'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-heavy'
'TDRC' (Recording time)                             '2004'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Secure mode)'
'TIT2' (Title/songname/content description)         'Children Of The Grave'
'TKEY' (Initial key)                                '12A'
'TPE1' (Lead performer(s)/Soloist(s))               'Black Sabbath'
'TPE2' (Band/orchestra/accompaniment)               'Black Sabbath'
'TPUB' (Publisher)                                  'Rhino Records'
'TRCK' (Track number/Position in set)               '04'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['classic rock', 'rock', 'hard rock', 'metal', 'heavy metal']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.18 dB'
'TXXX:replaygain_track_peak'                        '0.382933'
'WCOM:http://www.amazon.com/exec/obidos/redirect?tag=softpointer-20%26link_code=xm2%26camp=2025%26creative=165953%26path=http://www.amazon.com/gp/redirect.html%253fASIN=B000002KDO%2526tag=softpointer-20%2526lcode=xm2%2526cID=2025%2526ccmID=165953%2526location=/o/ASIN/B000002KDO%25253FSubscriptionId=0RXJS26C80QSDEB56CR2'  WCOM(url='http://www.amazon.com/exec/obidos/redirect?tag=softpointer-20%26link_code=xm2%26camp=2025%26creative=165953%26path=http://www.amazon.com/gp/redirect.html%253fASIN=B000002KDO%2526tag=softpointer-20%2526lcode=xm2%2526cID=2025%2526ccmID=165953%2526location=/o/ASIN/B000002KDO%25253FSubscriptionId=0RXJS26C80QSDEB56CR2')

========================== row from database ==========================
                                              'id'  1391561
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Black Sabbath/Black Sabbath - 1971 - Master of Reality (BB3)/Black Sabbath - 04 - Children of the Grave.mp3
                                         'working'  None
                                         'bitrate'  231
                                    'duration_sec'  317
                                           'genre'  eid-metal-heavy
                                        'filesize'  9220752
                                           'mtime'  1620311045
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal 1971 (BB3) 04 the eid metal heavy
                                      'tag_artist'  Black Sabbath
                                     'tag_release'  Master of Reality (Black Box: CD3)
                                       'tag_title'  Children Of The Grave
                                             'bpm'  145.476
                                    'search_title'  'children':1 'grave':4 'of':2 'the':3
                                   'search_artist'  'black':1 'sabbath':2
                                  'search_release'  'black':4,5 'box':6,7 'cd3':8,9 'master':1 'of':2 'reality':3
                                     'search_rest'  '00dwimp':1 '00metal':2 '1971':3 'bb3':4,5 'eid':7 'heavy':9 'metal':8 'the':6
                                    'search_combo'  '00dwimp':16 '00metal':17 '1971':18 'bb3':19,20 'black':5B,10C,11C 'box':12C,13C 'cd3':14C,15C 'children':1A 'eid':22 'grave':4A 'heavy':24 'master':7C 'metal':23 'of':2A,8C 'reality':9C 'sabbath':6B 'the':3A,21
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  12A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-1', 'q-bass-3', 'q-grit-4']
                                      'lastfmtags'  ['classic rock', 'rock', 'hard rock', 'metal', 'heavy metal']
                                        'tag_date'  2004
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620311044.8461406  (2021-05-06 16:24:04)
                             'size'  9220752