======================== unified (from filesystem) ========================
                                         'bitrate'  '193.17'
                                        'duration'  '317'
                                          'artist'  'Black Sabbath'
                                     'text_people'  ''
                                         'release'  'Never Say Die (Black Box: CD8)'
                                           'title'  'Air Dance'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'Q-PLAY-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-4', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-vocals-2', 'q-mixbeat-1', "
 "'Q-PIANO-2']")
                                      'lastfmtags'  "['classic rock', 'rock', 'hard rock', 'metal', 'heavy metal']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '06'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'eid-metal-heavy'
                                             'bpm'  '112.072'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Never Say Die (Black Box: CD8)'
'TBPM' (BPM (beats per minute))                     '112.072'
'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)         'Air Dance'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Black Sabbath'
'TPE2' (Band/orchestra/accompaniment)               'Black Sabbath'
'TPUB' (Publisher)                                  'Rhino Records'
'TRCK' (Track number/Position in set)               '06'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['classic rock', 'rock', 'hard rock', 'metal', 'heavy metal']
'TXXX:q-bass'                                       '4'
'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-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.91 dB'
'TXXX:replaygain_track_peak'                        '0.505897'
'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=B000002KIK%2526tag=softpointer-20%2526lcode=xm2%2526cID=2025%2526ccmID=165953%2526location=/o/ASIN/B000002KIK%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=B000002KIK%2526tag=softpointer-20%2526lcode=xm2%2526cID=2025%2526ccmID=165953%2526location=/o/ASIN/B000002KIK%25253FSubscriptionId=0RXJS26C80QSDEB56CR2')

========================== row from database ==========================
                                              'id'  1396231
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Black Sabbath/Black Sabbath - 1978 - Never Say Die (BB8)/Black Sabbath - 06 - Air Dance.mp3
                                         'working'  None
                                         'bitrate'  193
                                    'duration_sec'  317
                                           'genre'  eid-metal-heavy
                                        'filesize'  7686468
                                           'mtime'  1620311066
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal 1978 (BB8) 06 eid metal heavy
                                      'tag_artist'  Black Sabbath
                                     'tag_release'  Never Say Die (Black Box: CD8)
                                       'tag_title'  Air Dance
                                             'bpm'  112.072
                                    'search_title'  'air':1 'dance':2
                                   'search_artist'  'black':1 'sabbath':2
                                  'search_release'  'black':4,5 'box':6,7 'cd8':8,9 'die':3 'never':1 'say':2
                                     'search_rest'  '00dwimp':1 '00metal':2 '1978':3 'bb8':4,5 'eid':6 'heavy':8 'metal':7
                                    'search_combo'  '00dwimp':14 '00metal':15 '1978':16 'air':1A 'bb8':17,18 'black':3B,8C,9C 'box':10C,11C 'cd8':12C,13C 'dance':2A 'die':7C 'eid':19 'heavy':21 'metal':20 'never':5C 'sabbath':4B 'say':6C
                                    'tag_tracknum'  6
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', '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-PLAY-2', 'q-bass-4', 'q-grit-4']
                                      'lastfmtags'  ['classic rock', 'rock', 'hard rock', 'metal', 'heavy metal']
                                        'tag_date'  2004
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620311066.3898525  (2021-05-06 16:24:26)
                             'size'  7686468