======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '254'
                                          'artist'  'Norther'
                                     'text_people'  ''
                                         'release'  'Mirror Of Madness'
                                           'title'  'Unleash Hell'
                                           '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-3', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['power metal', 'finnish metal', 'finnish', 'death metal', 'metal', 'melodic "
 "death metal']")
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '07'
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'eid-metal-death'
                                             'bpm'  '139.851'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Mirror Of Madness'
'TBPM' (BPM (beats per minute))                     '139.851'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-death'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'Unleash Hell'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Norther'
'TRCK' (Track number/Position in set)               '07'
'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:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['power metal',
 'finnish metal',
 'finnish',
 'death metal',
 'metal',
 'melodic death metal']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-2.11 dB'
'TXXX:replaygain_track_peak'                        '0.401401'

========================== row from database ==========================
                                              'id'  1254139
                                            'path'  /data/Music/Bulk/00dwimp/Norther/Mirror of Madness/07 - unleash hell.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  254
                                           'genre'  eid-metal-death
                                        'filesize'  6118819
                                           'mtime'  1620302132
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp of 07 unleash hell eid metal death
                                      'tag_artist'  Norther
                                     'tag_release'  Mirror Of Madness
                                       'tag_title'  Unleash Hell
                                             'bpm'  139.851
                                    'search_title'  'hell':2 'unleash':1
                                   'search_artist'  'norther':1
                                  'search_release'  'madness':3 'mirror':1 'of':2
                                     'search_rest'  '00dwimp':1 'death':7 'eid':5 'hell':4 'metal':6 'of':2 'unleash':3
                                    'search_combo'  '00dwimp':7 'death':13 'eid':11 'hell':2A,10 'madness':6C 'metal':12 'mirror':4C 'norther':3B 'of':5C,8 'unleash':1A,9
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-1', 'q-bass-3', 'q-grit-4']
                                      'lastfmtags'  ['power metal', 'finnish metal', 'finnish', 'death metal', 'metal', 'melodic death metal']
                                        'tag_date'  2003
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620302132.225557  (2021-05-06 13:55:32)
                             'size'  6118819