======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '385'
                                          'artist'  'Iron Maiden'
                                     'text_people'  ''
                                         'release'  'Brave New World'
                                           'title'  'Out of The Silent Planet'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-4', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['nwobhm', 'rock', 'hard rock', 'metal', 'heavy metal']"
                                     'discogstags'  "['rock', 'heavy metal']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'eid-metal'
                                             'bpm'  '101.921'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Brave New World'
'TBPM' (BPM (beats per minute))                     '101.921'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Out of The Silent Planet'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Iron Maiden'
'TRCK' (Track number/Position in set)               '9'
'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', 'heavy metal']
'TXXX:lastfmtags'                                   ['nwobhm', 'rock', 'hard rock', 'metal', 'heavy metal']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.94 dB'
'TXXX:replaygain_track_peak'                        '0.418402'

========================== row from database ==========================
                                              'id'  1395124
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Iron Maiden vs Bob Marley - Iron Maiden/Brave New World [2000]/09 - Out Of The Silent Planet.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  385
                                           'genre'  eid-metal
                                        'filesize'  9253447
                                           'mtime'  1620300837
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal vs Bob Marley [2000] 09 Of eid metal
                                      'tag_artist'  Iron Maiden
                                     'tag_release'  Brave New World
                                       'tag_title'  Out of The Silent Planet
                                             'bpm'  101.921
                                    'search_title'  'of':2 'out':1 'planet':5 'silent':4 'the':3
                                   'search_artist'  'iron':1 'maiden':2
                                  'search_release'  'brave':1 'new':2 'world':3
                                     'search_rest'  '00dwimp':1 '00metal':2 '2000':6,7 'bob':4 'eid':9 'marley':5 'metal':10 'of':8 'vs':3
                                    'search_combo'  '00dwimp':11 '00metal':12 '2000':16,17 'bob':14 'brave':8C 'eid':19 'iron':6B 'maiden':7B 'marley':15 'metal':20 'new':9C 'of':2A,18 'out':1A 'planet':5A 'silent':4A 'the':3A 'vs':13 'world':10C
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-4', 'q-other-3', 'Q-HAP-1', 'q-bass-2', 'q-grit-4']
                                      'lastfmtags'  ['nwobhm', 'rock', 'hard rock', 'metal', 'heavy metal']
                                        'tag_date'  2000
                                     'discogstags'  ['rock', 'heavy metal']

============================== file details ==============================
                                           'mtime'  1620300836.7926948  (2021-05-06 13:33:56)
                             'size'  9253447