======================== unified (from filesystem) ========================
                                         'bitrate'  '210.734'
                                        'duration'  '242'
                                          'artist'  'The Roots'
                                     'text_people'  ''
                                         'release'  'The Tipping Point'
                                           'title'  "I Don't Care"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-3', 'Q-UNU-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['alternative rap', 'hip hop', 'rap', 'soul']"
                                     'discogstags'  "['hip hop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism'
                                             'bpm'  '102.801'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         'ESCAPE'
'COMM:ID3v1 Comment:XXX'                            'ESCAPE'
'PRIV:AverageLevel:9#\x00\x00'                      PRIV(owner='AverageLevel', data=b'9#\x00\x00')
'PRIV:PeakValue:ÿ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xff\x7f\x00\x00')
'TALB' (Album/Movie/Show title)                     'The Tipping Point'
'TBPM' (BPM (beats per minute))                     '102.801'
'TCON' (Content type, a.k.a. Genre)                 'hip hop or rnb or rap or turntablism'
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         "I Don't Care"
'TKEY' (Initial key)                                '8A'
'TLAN' (Language(s))                                'English'
'TPE1' (Lead performer(s)/Soloist(s))               'The Roots'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '3'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'hip hop'
'TXXX:lastfmtags'                                   ['alternative rap', 'hip hop', 'rap', 'soul']
'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'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.66 dB'
'TXXX:replaygain_track_peak'                        '0.494489'

========================== row from database ==========================
                                              'id'  1256991
                                            'path'  /data/Music/Bulk/00popandrock-hiphop-rap-rnb-turntablism/The Roots/The Tipping Point/02-the_roots-i_dont_care-esc.mp3
                                         'working'  None
                                         'bitrate'  210
                                    'duration_sec'  242
                                           'genre'  hip hop or rnb or rap or turntablism
                                        'filesize'  6401875
                                           'mtime'  1620592547
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock hiphop rap rnb turntablism 02 the_roots i_dont_care esc hip hop or rnb or rap or turntablism
                                      'tag_artist'  The Roots
                                     'tag_release'  The Tipping Point
                                       'tag_title'  I Don't Care
                                             'bpm'  102.801
                                    'search_title'  'care':5 'don':2 'dont':4 'i':1 't':3
                                   'search_artist'  'roots':2 'the':1
                                  'search_release'  'point':3 'the':1 'tipping':2
                                     'search_rest'  'care':9 'dont':8 'esc':10 'hip':11 'hiphop':1 'hop':12 'i':7 'or':13 'rap':2 'rnb':3 'roots':6 'the':5 'turntablism':4
                                    'search_combo'  'care':5A,19 'don':2A 'dont':4A,18 'esc':20 'hip':21 'hiphop':11 'hop':22 'i':1A,17 'or':23 'point':10C 'rap':12 'rnb':13 'roots':7B,16 't':3A 'the':6B,8C,15 'tipping':9C 'turntablism':14
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-3', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', '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'  ['alternative rap', 'hip hop', 'rap', 'soul']
                                        'tag_date'  2004
                                     'discogstags'  ['hip hop']

============================== file details ==============================
                                           'mtime'  1620592547.0919664  (2021-05-09 22:35:47)
                             'size'  6401875