======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '216'
                                          'artist'  'Dub Terminator'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Sound of the police'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-3', 'Q-UNU-2', 'Q-OLDST-2', 'Q-HHRNBTT-2', "
 "'Q-LOCALNESS-3', 'q-syn-2', 'q-bass-4', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['electronic', 'dub', 'reggae', 'dubstep', 'experimental']"
                                     'discogstags'  "['electronic', 'dubstep']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-style-reggae or dub or ska or dancehall-unsorted'
                                             'bpm'  '89.1'
                                             'key'  '2B'
                                        'acoustid'  ''
rest: ''

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

'COMM:iTunNORM:eng'                                 (' 000016EB 00001AB3 0001CA34 0001B6D8 0001781F 00015BF5 00008C88 00008CFF '
 '00025DEB 00027134')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 000006F0 0000000000916800 00000000 0083CAC7 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'TBPM' (BPM (beats per minute))                     '89.1'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-reggae or dub or ska or dancehall-unsorted'
'TENC' (Encoded by)                                 'iTunes 9.1.1'
'TIT2' (Title/songname/content description)         'Sound of the police'
'TKEY' (Initial key)                                '2B'
'TPE1' (Lead performer(s)/Soloist(s))               'Dub Terminator'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['electronic', 'dubstep']
'TXXX:lastfmtags'                                   ['electronic', 'dub', 'reggae', 'dubstep', 'experimental']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.41 dB'
'TXXX:replaygain_track_peak'                        '0.343156'

========================== row from database ==========================
                                              'id'  1339883
                                            'path'  /data/Music/Bulk/00localcharacter/Reggae/Sound of the police - Dub Terminator.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  216
                                           'genre'  loc-style-reggae or dub or ska or dancehall-unsorted
                                        'filesize'  8647613
                                           'mtime'  1620523624
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter Reggae loc style reggae dub ska dancehall unsorted
                                      'tag_artist'  Dub Terminator
                                     'tag_release'  None
                                       'tag_title'  Sound of the police
                                             'bpm'  89.1
                                    'search_title'  'of':2 'police':4 'sound':1 'the':3
                                   'search_artist'  'dub':1 'terminator':2
                                  'search_release'  
                                     'search_rest'  'dancehall':6 'dub':4 'loc':2 'reggae':1 'ska':5 'style':3 'unsorted':7
                                    'search_combo'  'dancehall':12 'dub':5B,10 'loc':8 'of':2A 'police':4A 'reggae':7 'ska':11 'sound':1A 'style':9 'terminator':6B 'the':3A 'unsorted':13
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  2B
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-1', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['electronic', 'dub', 'reggae', 'dubstep', 'experimental']
                                        'tag_date'  
                                     'discogstags'  ['electronic', 'dubstep']

============================== file details ==============================
                                           'mtime'  1620523623.7073474  (2021-05-09 03:27:03)
                             'size'  8647613