======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '287'
                                          'artist'  'Eminem'
                                     'text_people'  ''
                                         'release'  'The Marshall Mathers LP'
                                           'title'  'Real Slim Shady'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-3', "
 "'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'  "['pop', 'hip hop', 'rap']"
                                     'discogstags'  "['hip hop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '08'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism;set-pl-billboard'
                                             'bpm'  '104.660'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '01-07-2001'
'COMM:ID3v1 Comment:XXX'                            '01-07-2001'
'TALB' (Album/Movie/Show title)                     'The Marshall Mathers LP'
'TBPM' (BPM (beats per minute))                     '104.660'
'TCON' (Content type, a.k.a. Genre)                 ['hip hop or rnb or rap or turntablism', 'set-pl-billboard']
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Real Slim Shady'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Eminem'
'TRCK' (Track number/Position in set)               '08'
'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'                                   ['pop', 'hip hop', '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'                        '+0.97 dB'
'TXXX:replaygain_track_peak'                        '0.510964'

========================== row from database ==========================
                                              'id'  781867
                                            'path'  /data/Music/Bulk/00popandrock-hiphop-rap-rnb-turntablism/Eminem/Marschall Mathers/Eminem - Real Slim Shady.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  287
                                           'genre'  hip hop or rnb or rap or turntablism;set-pl-billboard
                                        'filesize'  4600044
                                           'mtime'  1620528100
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock hiphop rap rnb turntablism Marschall hip hop or rnb or rap or turntablism;set pl billboard
                                      'tag_artist'  Eminem
                                     'tag_release'  The Marshall Mathers LP
                                       'tag_title'  Real Slim Shady
                                             'bpm'  104.66
                                    'search_title'  'real':1 'shady':3 'slim':2
                                   'search_artist'  'eminem':1
                                  'search_release'  'lp':4 'marshall':2 'mathers':3 'the':1
                                     'search_rest'  'billboard':14 'hip':6 'hiphop':1 'hop':7 'marschall':5 'or':8 'pl':13 'rap':2 'rnb':3 'set':10,12 'turntablism':4,9,11
                                    'search_combo'  'billboard':22 'eminem':4B 'hip':14 'hiphop':9 'hop':15 'lp':8C 'marschall':13 'marshall':6C 'mathers':7C 'or':16 'pl':21 'rap':10 'real':1A 'rnb':11 'set':18,20 'shady':3A 'slim':2A 'the':5C 'turntablism':12,17,19
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-3', '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'  ['pop', 'hip hop', 'rap']
                                        'tag_date'  2000
                                     'discogstags'  ['hip hop']

============================== file details ==============================
                                           'mtime'  1620528100.3647895  (2021-05-09 04:41:40)
                             'size'  4600044