======================== unified (from filesystem) ========================
                                         'bitrate'  '224.0'
                                        'duration'  '166'
                                          'artist'  'The String Quartet'
                                     'text_people'  'Johnny Marr/S. Morrissey'
                                         'release'  'Tribute To The Smiths'
                                           'title'  'This Charming Man'
                                           'quals'  ("['Q-HAP-2', 'Q-OLDST-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', "
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 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['classical', 'cover', 'covers', 'instrumental', 'tribute', 'strings']"
                                     'discogstags'  "['classical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '106.700'
                                             'key'  '11B'
                                        'acoustid'  ''
rest: ''

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

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'COMM:iTunNORM:eng'                                 (' 00000D6C 000008C2 0000681E 00004F7A 0000F9D5 0001D8C0 000071FB 00006E94 '
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'TALB' (Album/Movie/Show title)                     'Tribute To The Smiths'
'TBPM' (BPM (beats per minute))                     '106.700'
'TCOM' (Composer)                                   'Johnny Marr/S. Morrissey'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'This Charming Man'
'TKEY' (Initial key)                                '11B'
'TLEN' (Length)                                     '166133'
'TPE1' (Lead performer(s)/Soloist(s))               'The String Quartet'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Vitamin'
'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'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'classical'
'TXXX:lastfmtags'                                   ['classical', 'cover', 'covers', 'instrumental', 'tribute', 'strings']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.63 dB'
'TXXX:replaygain_track_peak'                        '0.445246'

========================== row from database ==========================
                                              'id'  1283972
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/08_the string quartet_this charming man.mp3
                                         'working'  None
                                         'bitrate'  224
                                    'duration_sec'  166
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  4657161
                                           'mtime'  1637329819
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] 08_the string quartet_this charming man prerock classical or classical instruments
                                      'tag_artist'  The String Quartet
                                     'tag_release'  Tribute To The Smiths
                                       'tag_title'  This Charming Man
                                             'bpm'  106.7
                                    'search_title'  'charming':2 'man':3 'this':1
                                   'search_artist'  'quartet':3 'string':2 'the':1
                                  'search_release'  'smiths':4 'the':3 'to':2 'tribute':1
                                     'search_rest'  '00poprockelectronic':1 '08':7 'charming':12 'classical':15 'files':5,6 'instruments':17 'loose':3,4 'man':13 'or':16 'prerock':14 'quartet':10 'string':9 'the':8 'this':11 'unsorted':2
                                    'search_combo'  '00poprockelectronic':11 '08':17 'charming':2A,22 'classical':25 'files':15,16 'instruments':27 'loose':13,14 'man':3A,23 'or':26 'prerock':24 'quartet':6B,20 'smiths':10C 'string':5B,19 'the':4B,9C,18 'this':1A,21 'to':8C 'tribute':7C 'unsorted':12
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  11B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-4', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['classical', 'cover', 'covers', 'instrumental', 'tribute', 'strings']
                                        'tag_date'  2003
                                     'discogstags'  ['classical']

============================== file details ==============================
                                           'mtime'  1637329819.2856348  (2021-11-19 14:50:19)
                             'size'  4657161