======================== unified (from filesystem) ========================
                                         'bitrate'  '227.116'
                                        'duration'  '299'
                                          'artist'  'The Mars Volta'
                                     'text_people'  ''
                                         'release'  'Frances The Mute'
                                           'title'  'Cassandra Geminni: Plant A Nail In The Navel Stream'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['alternative', 'progressive rock', 'progressive', 'experimental', 'rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive'
                                             'bpm'  '130.230'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Frances The Mute'
'TBPM' (BPM (beats per minute))                     '130.230'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-progressive'
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'Cassandra Geminni: Plant A Nail In The Navel Stream'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Mars Volta'
'TRCK' (Track number/Position in set)               '9'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['alternative', 'progressive rock', 'progressive', 'experimental', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'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'                        '+1.13 dB'
'TXXX:replaygain_track_peak'                        '0.424003'

========================== row from database ==========================
                                              'id'  1410346
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/The Mars Volta/Frances The Mute/09 Cassandra Geminni_ Plant A Nail I.mp3
                                         'working'  None
                                         'bitrate'  227
                                    'duration_sec'  299
                                           'genre'  rock-cppex-progressive
                                        'filesize'  8515584
                                           'mtime'  1620737767
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy 09 Geminni_ rock cppex progressive
                                      'tag_artist'  The Mars Volta
                                     'tag_release'  Frances The Mute
                                       'tag_title'  Cassandra Geminni: Plant A Nail In The Navel Stream
                                             'bpm'  130.23
                                    'search_title'  'a':5 'cassandra':1 'geminni':2,3 'in':7 'nail':6 'navel':9 'plant':4 'stream':10 'the':8
                                   'search_artist'  'mars':2 'the':1 'volta':3
                                  'search_release'  'frances':1 'mute':3 'the':2
                                     'search_rest'  'classicprogpsy':1 'cppex':4 'geminni':2 'progressive':5 'rock':3
                                    'search_combo'  'a':5A 'cassandra':1A 'classicprogpsy':17 'cppex':20 'frances':14C 'geminni':2A,3A,18 'in':7A 'mars':12B 'mute':16C 'nail':6A 'navel':9A 'plant':4A 'progressive':21 'rock':19 'stream':10A 'the':8A,11B,15C 'volta':13B
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['alternative', 'progressive rock', 'progressive', 'experimental', 'rock']
                                        'tag_date'  2005
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620737766.9795287  (2021-05-11 14:56:06)
                             'size'  8515584