======================== unified (from filesystem) ========================
                                         'bitrate'  '242.274'
                                        'duration'  '190'
                                          'artist'  'Warmen'
                                     'text_people'  ''
                                         'release'  'Accept the Fact'
                                           'title'  'Waters of Lethe'
                                           '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-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  ("['power metal', 'neo classical metal', 'finnish', 'metal', 'instrumental', "
 "'progressive metal']")
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'eid-metal-power'
                                             'bpm'  '94.064'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Accept the Fact'
'TBPM' (BPM (beats per minute))                     '94.064'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-power'
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'Waters of Lethe'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Warmen'
'TRCK' (Track number/Position in set)               '3'
'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',
 'neo classical metal',
 'finnish',
 'metal',
 'instrumental',
 'progressive metal']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.55 dB'
'TXXX:replaygain_track_peak'                        '0.334284'

========================== row from database ==========================
                                              'id'  1400086
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Warmen/03 Waters Of Lethe.mp3
                                         'working'  None
                                         'bitrate'  242
                                    'duration_sec'  190
                                           'genre'  eid-metal-power
                                        'filesize'  5770538
                                           'mtime'  1620310855
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal 03 Of eid metal power
                                      'tag_artist'  Warmen
                                     'tag_release'  Accept the Fact
                                       'tag_title'  Waters of Lethe
                                             'bpm'  94.064
                                    'search_title'  'lethe':3 'of':2 'waters':1
                                   'search_artist'  'warmen':1
                                  'search_release'  'accept':1 'fact':3 'the':2
                                     'search_rest'  '00dwimp':1 '00metal':2 'eid':4 'metal':5 'of':3 'power':6
                                    'search_combo'  '00dwimp':8 '00metal':9 'accept':5C 'eid':11 'fact':7C 'lethe':3A 'metal':12 'of':2A,10 'power':13 'the':6C 'warmen':4B 'waters':1A
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', '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'  ['power metal', 'neo classical metal', 'finnish', 'metal', 'instrumental', 'progressive metal']
                                        'tag_date'  2005
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620310855.384112  (2021-05-06 16:20:55)
                             'size'  5770538