======================== unified (from filesystem) ========================
                                         'bitrate'  '231.631'
                                        'duration'  '345'
                                          'artist'  'Black Sabbath'
                                     'text_people'  ''
                                         'release'  'Sabbath Bloody Sabbath (Black Box: CD5)'
                                           'title'  'Sabbath Bloody Sabbath'
                                           '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-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['classic rock', 'rock', 'hard rock', 'metal', 'heavy metal']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '01'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'eid-metal-heavy'
                                             'bpm'  '137.013'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Sabbath Bloody Sabbath (Black Box: CD5)'
'TBPM' (BPM (beats per minute))                     '137.013'
'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)         'Sabbath Bloody Sabbath'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Black Sabbath'
'TPE2' (Band/orchestra/accompaniment)               'Black Sabbath'
'TPUB' (Publisher)                                  'Rhino Records'
'TRCK' (Track number/Position in set)               '01'
'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'                                      '2'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.11 dB'
'TXXX:replaygain_track_peak'                        '0.382422'
'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=B000002KET%2526tag=softpointer-20%2526lcode=xm2%2526cID=2025%2526ccmID=165953%2526location=/o/ASIN/B000002KET%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=B000002KET%2526tag=softpointer-20%2526lcode=xm2%2526cID=2025%2526ccmID=165953%2526location=/o/ASIN/B000002KET%25253FSubscriptionId=0RXJS26C80QSDEB56CR2')

========================== row from database ==========================
                                              'id'  1398168
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Black Sabbath/Black Sabbath - 1973 - Sabbath Bloody Sabbath (BB5)/Black Sabbath - 01 - Sabbath Bloody Sabbath.mp3
                                         'working'  None
                                         'bitrate'  231
                                    'duration_sec'  345
                                           'genre'  eid-metal-heavy
                                        'filesize'  10028964
                                           'mtime'  1620311046
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal 1973 (BB5) 01 eid metal heavy
                                      'tag_artist'  Black Sabbath
                                     'tag_release'  Sabbath Bloody Sabbath (Black Box: CD5)
                                       'tag_title'  Sabbath Bloody Sabbath
                                             'bpm'  137.013
                                    'search_title'  'bloody':2 'sabbath':1
                                   'search_artist'  'black':1 'sabbath':2
                                  'search_release'  'black':3,4 'bloody':2 'box':5,6 'cd5':7,8 'sabbath':1
                                     'search_rest'  '00dwimp':1 '00metal':2 '1973':3 'bb5':4,5 'eid':6 'heavy':8 'metal':7
                                    'search_combo'  '00dwimp':13 '00metal':14 '1973':15 'bb5':16,17 'black':3B,7C,8C 'bloody':2A,6C 'box':9C,10C 'cd5':11C,12C 'eid':18 'heavy':20 'metal':19 'sabbath':1A,4B,5C
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-2', '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'  1620311046.4762175  (2021-05-06 16:24:06)
                             'size'  10028964