======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '118'
                                          'artist'  'Glenn Gould'
                                     'text_people'  ''
                                         'release'  'The Glenn Gould Silver Jubilee Album'
                                           'title'  'Alexander Scriabin: Deux Morceaux, Op.57 No. 1: Desir'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
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 "'Q-PIANO-4', 'q-chart-3', 'q-drums-1', 'q-other-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['piano', 'bach', 'baroque', 'classical', 'canadian']"
                                     'discogstags'  "['baroque', 'classical', 'interview', 'classical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '135.2'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Glenn Gould Silver Jubilee Album'
'TBPM' (BPM (beats per minute))                     '135.2'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TDRC' (Recording time)                             '2006'
'TIT2' (Title/songname/content description)         'Alexander Scriabin: Deux Morceaux, Op.57 No. 1: Desir'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Glenn Gould'
'TRCK' (Track number/Position in set)               '8'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['baroque', 'classical', 'interview', 'classical']
'TXXX:lastfmtags'                                   ['piano', 'bach', 'baroque', 'classical', 'canadian']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+3.37 dB'
'TXXX:replaygain_track_peak'                        '0.939815'

========================== row from database ==========================
                                              'id'  1371639
                                            'path'  /data/Music/Bulk/00instruments-classical/CD63A - The Glenn Gould Silver Jubilee Album/08.Alexander Scriabin_ Deux Morceaux, Op.57 No. 1_ Desir.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  118
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  4749256
                                           'mtime'  1637329781
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical CD63A 08.Alexander Scriabin_ 1_ prerock classical classical instruments
                                      'tag_artist'  Glenn Gould
                                     'tag_release'  The Glenn Gould Silver Jubilee Album
                                       'tag_title'  Alexander Scriabin: Deux Morceaux, Op.57 No. 1: Desir
                                             'bpm'  135.2
                                    'search_title'  '1':12,13 '57':8 'alexander':1 'desir':14 'deux':4 'morceaux':5,6 'no':10,11 'op':7 'op57':9 'scriabin':2,3
                                   'search_artist'  'glenn':1 'gould':2
                                  'search_release'  'album':6 'glenn':2 'gould':3 'jubilee':5 'silver':4 'the':1
                                     'search_rest'  '00instruments':1 '08':4 '08alexander':6 '1':8 'alexander':5 'cd63a':3 'classical':2 'instruments':10 'prerock':9 'scriabin':7
                                    'search_combo'  '00instruments':23 '08':26 '08alexander':28 '1':12A,13A,30 '57':8A 'album':22C 'alexander':1A,27 'cd63a':25 'classical':24 'desir':14A 'deux':4A 'glenn':15B,18C 'gould':16B,19C 'instruments':32 'jubilee':21C 'morceaux':5A,6A 'no':10A,11A 'op':7A 'op57':9A 'prerock':31 'scriabin':2A,3A,29 'silver':20C 'the':17C
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-3', 'q-other-1', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['piano', 'bach', 'baroque', 'classical', 'canadian']
                                        'tag_date'  2006
                                     'discogstags'  ['baroque', 'classical', 'interview', 'classical']

============================== file details ==============================
                                           'mtime'  1637329780.5318477  (2021-11-19 14:49:40)
                             'size'  4749256