======================== unified (from filesystem) ========================
                                         'bitrate'  '224.0'
                                        'duration'  '300'
                                          'artist'  'Steely Dan'
                                     'text_people'  'Donald Fagen/Walter Becker'
                                         'release'  'Progsoup 40'
                                           'title'  'King Of The World'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-JZFKS-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-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', '70s', 'rock', 'jazz rock', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '27'
                                      'tracktotal'  ''
                                            'date'  '1973'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive'
                                             'bpm'  '130.063'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

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'COMM:iTunNORM:eng'                                 (' 0000062A 000005DD 00002145 00005056 00044605 00009C40 00006E6A 00007C73 '
 '0003D090 00009C40')
'COMM:iTunes_CDDB_IDs:eng'                          '8+CC24FD0CBA51DE2084574C2BB5B47C48+414796'
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'TALB' (Album/Movie/Show title)                     'Progsoup 40'
'TBPM' (BPM (beats per minute))                     '130.063'
'TCOM' (Composer)                                   'Donald Fagen/Walter Becker'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-progressive'
'TDRC' (Recording time)                             '1973'
'TENC' (Encoded by)                                 'iTunes v2.0.3'
'TIT2' (Title/songname/content description)         'King Of The World'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Steely Dan'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'MCA International'
'TRCK' (Track number/Position in set)               '27'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['jazz', '70s', 'rock', 'jazz rock', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.36 dB'
'TXXX:replaygain_track_peak'                        '0.547504'

========================== row from database ==========================
                                              'id'  1411942
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/PROGSOUP/progsoup 40/2327 steely dan - king of the world.mp3
                                         'working'  None
                                         'bitrate'  224
                                    'duration_sec'  300
                                           'genre'  rock-cppex-progressive
                                        'filesize'  8407030
                                           'mtime'  1620737354
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy PROGSOUP progsoup 2327 steely dan king of the world rock cppex progressive
                                      'tag_artist'  Steely Dan
                                     'tag_release'  Progsoup 40
                                       'tag_title'  King Of The World
                                             'bpm'  130.063
                                    'search_title'  'king':1 'of':2 'the':3 'world':4
                                   'search_artist'  'dan':2 'steely':1
                                  'search_release'  '40':2 'progsoup':1
                                     'search_rest'  '2327':3 'classicprogpsy':1 'cppex':11 'dan':5 'king':6 'of':7 'progressive':12 'progsoup':2 'rock':10 'steely':4 'the':8 'world':9
                                    'search_combo'  '2327':11 '40':8C 'classicprogpsy':9 'cppex':19 'dan':6B,13 'king':1A,14 'of':2A,15 'progressive':20 'progsoup':7C,10 'rock':18 'steely':5B,12 'the':3A,16 'world':4A,17
                                    'tag_tracknum'  27
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['jazz', '70s', 'rock', 'jazz rock', 'classic rock']
                                        'tag_date'  1973
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620737353.688245  (2021-05-11 14:49:13)
                             'size'  8407030