======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '59'
                                          'artist'  'MC Frontalot'
                                     'text_people'  ''
                                         'release'  'Final Boss'
                                           'title'  'A Very Unlikely Occurrence'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', "
 "'Q-HHRNBTT-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['nerdcore', 'nerdcore hip hop', 'hip hop', 'rap']"
                                     'discogstags'  "['hip hop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '2008'
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism'
                                             'bpm'  '85.997'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Final Boss'
'TBPM' (BPM (beats per minute))                     '85.997'
'TCON' (Content type, a.k.a. Genre)                 'hip hop or rnb or rap or turntablism'
'TDRC' (Recording time)                             '2008'
'TIT2' (Title/songname/content description)         'A Very Unlikely Occurrence'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'MC Frontalot'
'TRCK' (Track number/Position in set)               '9'
'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'                                   ['nerdcore', 'nerdcore hip hop', 'hip hop', 'rap']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'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'                        '+1.42 dB'
'TXXX:replaygain_track_peak'                        '0.374144'

========================== row from database ==========================
                                              'id'  719779
                                            'path'  /data/Music/Bulk/00popandrock-hiphop-rap-rnb-turntablism/Mc Frontalot/Final Boss (2008)/09 A Very Unlikely Occurrence.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  59
                                           'genre'  hip hop or rnb or rap or turntablism
                                        'filesize'  2362856
                                           'mtime'  1620585984
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock hiphop rap rnb turntablism Mc (2008) 09 hip hop or rnb or rap or turntablism
                                      'tag_artist'  MC Frontalot
                                     'tag_release'  Final Boss
                                       'tag_title'  A Very Unlikely Occurrence
                                             'bpm'  85.997
                                    'search_title'  'a':1 'occurrence':4 'unlikely':3 'very':2
                                   'search_artist'  'frontalot':2 'mc':1
                                  'search_release'  'boss':2 'final':1
                                     'search_rest'  '2008':6,7 'hip':8 'hiphop':1 'hop':9 'mc':5 'or':10 'rap':2 'rnb':3 'turntablism':4
                                    'search_combo'  '2008':14,15 'a':1A 'boss':8C 'final':7C 'frontalot':6B 'hip':16 'hiphop':9 'hop':17 'mc':5B,13 'occurrence':4A 'or':18 'rap':10 'rnb':11 'turntablism':12 'unlikely':3A 'very':2A
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  3A
                                           '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-2', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['nerdcore', 'nerdcore hip hop', 'hip hop', 'rap']
                                        'tag_date'  2008
                                     'discogstags'  ['hip hop']

============================== file details ==============================
                                           'mtime'  1620585983.520534  (2021-05-09 20:46:23)
                             'size'  2362856