======================== unified (from filesystem) ========================
                                         'bitrate'  '212.509'
                                        'duration'  '224'
                                          'artist'  'Dr. Dre'
                                     'text_people'  ''
                                         'release'  'Chronicle'
                                           'title'  'Forgot About Dre'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-4', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-4', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['west coast', 'hip hop', 'rap', 'gangsta rap']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism'
                                             'bpm'  '89.256'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Chronicle'
'TBPM' (BPM (beats per minute))                     '89.256'
'TCON' (Content type, a.k.a. Genre)                 'hip hop or rnb or rap or turntablism'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Forgot About Dre'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Dr. Dre'
'TXXX:Q-HAP'                                        '3'
'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'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.26 dB'
'TXXX:replaygain_track_peak'                        '0.306114'

========================== row from database ==========================
                                              'id'  1403896
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/Dr. Dre - Forgot About Dre.mp3
                                         'working'  None
                                         'bitrate'  212
                                    'duration_sec'  224
                                           'genre'  hip hop or rnb or rap or turntablism
                                        'filesize'  5963359
                                           'mtime'  1620558422
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat hip hop rnb rap turntablism
                                      'tag_artist'  Dr. Dre
                                     'tag_release'  Chronicle
                                       'tag_title'  Forgot About Dre
                                             'bpm'  89.256
                                    'search_title'  'about':2 'dre':3 'forgot':1
                                   'search_artist'  'dr':1,2 'dre':3
                                  'search_release'  'chronicle':1
                                     'search_rest'  '00poprockelectronic':1 'dance':3 'generic':2 'hip':5 'hop':6 'rap':8 'rnb':7 'trapbeat':4 'turntablism':9
                                    'search_combo'  '00poprockelectronic':8 'about':2A 'chronicle':7C 'dance':10 'dr':4B,5B 'dre':3A,6B 'forgot':1A 'generic':9 'hip':12 'hop':13 'rap':15 'rnb':14 'trapbeat':11 'turntablism':16
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-4', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-4', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['west coast', 'hip hop', 'rap', 'gangsta rap']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620558421.5611274  (2021-05-09 13:07:01)
                             'size'  5963359