======================== unified (from filesystem) ========================
                                         'bitrate'  '228.32'
                                        'duration'  '222'
                                          'artist'  'Dr. Dre'
                                     'text_people'  ''
                                         'release'  'Pitchfork: The Top 500 Tracks of the 2000s'
                                           'title'  'Forgot About Dre (feat. Eminem)'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-4', 'Q-OLDST-3', "
 "'Q-UNU-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['west coast', 'hip hop', 'rap', 'gangsta rap']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '068'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;set-pl-billboard'
                                             'bpm'  '89.414'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Pitchfork: The Top 500 Tracks of the 2000s'
'TBPM' (BPM (beats per minute))                     '89.414'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted', 'set-pl-billboard']
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'Forgot About Dre (feat. Eminem)'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Dr. Dre'
'TRCK' (Track number/Position in set)               '068'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '4'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['west coast', 'hip hop', 'rap', 'gangsta rap']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+17.84 dB'
'TXXX:replaygain_track_peak'                        '0.046253'

========================== row from database ==========================
                                              'id'  1330208
                                            'path'  /data/Music/Bulk/00poprockelectronic/VA - Pitchfork - The Top 500 Tracks of the 2000s/068 - Dr. Dre - Forgot About Dre (feat. Eminem).mp3
                                         'working'  None
                                         'bitrate'  228
                                    'duration_sec'  222
                                           'genre'  electronic-generic or radio-unsorted;set-pl-billboard
                                        'filesize'  6348485
                                           'mtime'  1621695565
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic VA 068 electronic generic radio unsorted;set pl billboard
                                      'tag_artist'  Dr. Dre
                                     'tag_release'  Pitchfork: The Top 500 Tracks of the 2000s
                                       'tag_title'  Forgot About Dre (feat. Eminem)
                                             'bpm'  89.414
                                    'search_title'  'about':2 'dre':3 'eminem':6,7 'feat':4,5 'forgot':1
                                   'search_artist'  'dr':1,2 'dre':3
                                  'search_release'  '2000s':8 '500':5 'of':7 'pitchfork':1,2 'the':3 'top':4 'tracks':6
                                     'search_rest'  '00poprockelectronic':1 'billboard':11 'electronic':3 'generic':4 'pl':10 'radio':5 'set':7,9 'unsorted':6,8 'va':2
                                    'search_combo'  '00poprockelectronic':19 '2000s':18C '500':15C 'about':2A 'billboard':29 'dr':8B,9B 'dre':3A,10B 'electronic':21 'eminem':6A,7A 'feat':4A,5A 'forgot':1A 'generic':22 'of':17C 'pitchfork':11C,12C 'pl':28 'radio':23 'set':25,27 'the':13C 'top':14C 'tracks':16C 'unsorted':24,26 'va':20
                                    'tag_tracknum'  68
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-4', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-1', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['west coast', 'hip hop', 'rap', 'gangsta rap']
                                        'tag_date'  2005
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621695564.8542626  (2021-05-22 16:59:24)
                             'size'  6348485