======================== unified (from filesystem) ========================
                                         'bitrate'  '160.854'
                                        'duration'  '312'
                                          'artist'  'Darkthrone'
                                     'text_people'  ''
                                         'release'  'Total Death'
                                           'title'  'Earths Last Picture'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-4', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['norway', 'black metal', 'metal', 'norwegian black metal', 'blackened punk "
 "rock']")
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '01'
                                      'tracktotal'  ''
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'eid-metal-death;eid-metal-black'
                                             'bpm'  '118.706'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Total Death'
'TBPM' (BPM (beats per minute))                     '118.706'
'TCON' (Content type, a.k.a. Genre)                 ['eid-metal-death', 'eid-metal-black']
'TDRC' (Recording time)                             '1996'
'TIT2' (Title/songname/content description)         'Earths Last Picture'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Darkthrone'
'TRCK' (Track number/Position in set)               '01'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:QuodLibet::location'                          'NO'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['norway',
 'black metal',
 'metal',
 'norwegian black metal',
 'blackened punk rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.70 dB'
'TXXX:replaygain_track_peak'                        '0.806332'

========================== row from database ==========================
                                              'id'  934543
                                            'path'  /data/Music/Bulk/00dwimp/Darkthrone/Darkthrone - NO - 1996 - Total Death/Darkthrone - NO - 1996 - Total Death - 01 - Earths Last Picture.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  312
                                           'genre'  eid-metal-death;eid-metal-black
                                        'filesize'  6289408
                                           'mtime'  1620302120
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp NO 1996 NO 1996 01 eid metal death;eid metal black
                                      'tag_artist'  Darkthrone
                                     'tag_release'  Total Death
                                       'tag_title'  Earths Last Picture
                                             'bpm'  118.706
                                    'search_title'  'earths':1 'last':2 'picture':3
                                   'search_artist'  'darkthrone':1
                                  'search_release'  'death':2 'total':1
                                     'search_rest'  '00dwimp':1 '1996':3 'black':10 'death':6,8 'eid':4,7,9 'metal':5 'no':2
                                    'search_combo'  '00dwimp':7 '1996':9 'black':16 'darkthrone':4B 'death':6C,12,14 'earths':1A 'eid':10,13,15 'last':2A 'metal':11 'no':8 'picture':3A 'total':5C
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-1', 'q-bass-3', 'q-grit-4']
                                      'lastfmtags'  ['norway', 'black metal', 'metal', 'norwegian black metal', 'blackened punk rock']
                                        'tag_date'  1996
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620302120.368433  (2021-05-06 13:55:20)
                             'size'  6289408