======================== unified (from filesystem) ========================
                                         'bitrate'  '192.009'
                                        'duration'  '300'
                                          'artist'  'Grand Magus'
                                     'text_people'  ''
                                         'release'  'Grand Magus'
                                           'title'  'Black Hole'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-4', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['stoner rock', 'stoner metal', 'doom metal', 'metal', 'heavy metal']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  '10'
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'eid-metal-stoner'
                                             'bpm'  '85.961'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         'ExactAudioCopy v0.99pb5'
'COMM:ID3v1 Comment:XXX'                            'ExactAudioCopy v0.99pb5'
'TALB' (Album/Movie/Show title)                     'Grand Magus'
'TBPM' (BPM (beats per minute))                     '85.961'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-stoner'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'Black Hole'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Grand Magus'
'TRCK' (Track number/Position in set)               '9/10'
'TXXX:DISCID'                                       '880B0E0A'
'TXXX:Encoding Params'                              'vers'
'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'                                   ['stoner rock', 'stoner metal', 'doom metal', 'metal', 'heavy metal']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '-2.20 dB'
'TXXX:replaygain_track_peak'                        '0.459606'

========================== row from database ==========================
                                              'id'  1396648
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Grand Magus - Grand Magus/09 -- Black Hole.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  300
                                           'genre'  eid-metal-stoner
                                        'filesize'  7217375
                                           'mtime'  1620311548
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal 09 eid metal stoner
                                      'tag_artist'  Grand Magus
                                     'tag_release'  Grand Magus
                                       'tag_title'  Black Hole
                                             'bpm'  85.961
                                    'search_title'  'black':1 'hole':2
                                   'search_artist'  'grand':1 'magus':2
                                  'search_release'  'grand':1 'magus':2
                                     'search_rest'  '00dwimp':1 '00metal':2 'eid':3 'metal':4 'stoner':5
                                    'search_combo'  '00dwimp':7 '00metal':8 'black':1A 'eid':9 'grand':3B,5C 'hole':2A 'magus':4B,6C 'metal':10 'stoner':11
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-2', 'q-other-3', 'Q-HAP-1', 'q-bass-4', 'q-grit-4']
                                      'lastfmtags'  ['stoner rock', 'stoner metal', 'doom metal', 'metal', 'heavy metal']
                                        'tag_date'  2001
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620311548.328753  (2021-05-06 16:32:28)
                             'size'  7217375