======================== unified (from filesystem) ========================
                                         'bitrate'  '101.737'
                                        'duration'  '619'
                                          'artist'  'The Wicked Lady'
                                     'text_people'  ''
                                         'release'  'The Axeman Cometh'
                                           'title'  'Out Of The Dark'
                                           'quals'  ("['Q-OLDST-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-SYN-2', 'Q-BUSY-3', 'Q-GRIT-2', 'Q-PLAY-2', 'q-bass-4', 'Q-CHART-2', "
 "'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-2', 'Q-MIXBEAT-2']")
                                      'lastfmtags'  "['hard rock', 'psychedelic rock', 'heavy psych', 'proto-metal', 'psychedelic']"
                                     'discogstags'  "['psychedelic rock', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'rock-cppex'
                                             'bpm'  '137.9'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Axeman Cometh'
'TBPM' (BPM (beats per minute))                     '137.9'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex'
'TIT2' (Title/songname/content description)         'Out Of The Dark'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Wicked Lady'
'TRCK' (Track number/Position in set)               '6'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['psychedelic rock', 'rock']
'TXXX:lastfmtags'                                   ['hard rock', 'psychedelic rock', 'heavy psych', 'proto-metal', 'psychedelic']
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.46 dB'
'TXXX:replaygain_track_peak'                        '0.658416'

========================== row from database ==========================
                                              'id'  1478550
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/wicked lady - (68-72)/4 Out Of The Dark.mp3
                                         'working'  None
                                         'bitrate'  101
                                    'duration_sec'  619
                                           'genre'  rock-cppex
                                        'filesize'  7875806
                                           'mtime'  1620736879
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy wicked lady (68 72) 4 rock cppex
                                      'tag_artist'  The Wicked Lady
                                     'tag_release'  The Axeman Cometh
                                       'tag_title'  Out Of The Dark
                                             'bpm'  137.9
                                    'search_title'  'dark':4 'of':2 'out':1 'the':3
                                   'search_artist'  'lady':3 'the':1 'wicked':2
                                  'search_release'  'axeman':2 'cometh':3 'the':1
                                     'search_rest'  '4':8 '68':4,5 '72':6,7 'classicprogpsy':1 'cppex':10 'lady':3 'rock':9 'wicked':2
                                    'search_combo'  '4':18 '68':14,15 '72':16,17 'axeman':9C 'classicprogpsy':11 'cometh':10C 'cppex':20 'dark':4A 'lady':7B,13 'of':2A 'out':1A 'rock':19 'the':3A,5B,8C 'wicked':6B,12
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-2', 'Q-GRIT-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-2', 'q-drums-2', 'Q-SYN-2', 'q-other-3', 'Q-BUSY-3', 'Q-PLAY-2', 'q-bass-4']
                                      'lastfmtags'  ['hard rock', 'psychedelic rock', 'heavy psych', 'proto-metal', 'psychedelic']
                                        'tag_date'  
                                     'discogstags'  ['psychedelic rock', 'rock']

============================== file details ==============================
                                           'mtime'  1620736879.03455  (2021-05-11 14:41:19)
                             'size'  7875806