======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '181'
                                          'artist'  'Al Jolson & Andrews Sisters'
                                     'text_people'  ''
                                         'release'  'Kosher Nostra: Jewish Gangsters Greatest Hits'
                                           'title'  'The Old Piano Roll Blues'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', 'Q-UNU-1', "
 "'Q-OLDST-2', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
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                                      'lastfmtags'  "['swing', 'lindyhop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '08'
                                      'tracktotal'  ''
                                            'date'  '2011'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-soft-swing'
                                             'bpm'  '140.335'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Kosher Nostra: Jewish Gangsters Greatest Hits'
'TBPM' (BPM (beats per minute))                     '140.335'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-soft-swing'
'TDRC' (Recording time)                             '2011'
'TIT2' (Title/songname/content description)         'The Old Piano Roll Blues'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Al Jolson & Andrews Sisters'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Essay Recordings'
'TRCK' (Track number/Position in set)               '08'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['swing', 'lindyhop']
'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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.77 dB'
'TXXX:replaygain_track_peak'                        '0.357264'
'WXXX:'                                             WXXX(encoding=<Encoding.UTF16: 1>, desc='', url='Http://ice-10.blogspot.com   Http://interlacingshadows.wordpress.com')

========================== row from database ==========================
                                              'id'  1383730
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/VA - Kosher Nostra - Jewish Gangsters Greatest Hits [2011] (@320)/Al Jolson & Andrews Sisters - The Old Piano Roll Blues.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  181
                                           'genre'  prerock-jb-jazz-soft-swing
                                        'filesize'  7383485
                                           'mtime'  1620537032
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country VA [2011] (@320) prerock jb jazz soft swing
                                      'tag_artist'  Al Jolson & Andrews Sisters
                                     'tag_release'  Kosher Nostra: Jewish Gangsters Greatest Hits
                                       'tag_title'  The Old Piano Roll Blues
                                             'bpm'  140.335
                                    'search_title'  'blues':5 'old':2 'piano':3 'roll':4 'the':1
                                   'search_artist'  'al':1 'andrews':3 'jolson':2 'sisters':4
                                  'search_release'  'gangsters':5 'greatest':6 'hits':7 'jewish':4 'kosher':1 'nostra':2,3
                                     'search_rest'  '2011':6,7 '320':8,9 'country':4 'exotica':2 'jazz':1 'jb':11 'oldies':3 'prerock':10 'soft':12 'swing':13 'va':5
                                    'search_combo'  '2011':22,23 '320':24,25 'al':6B 'andrews':8B 'blues':5A 'country':20 'exotica':18 'gangsters':14C 'greatest':15C 'hits':16C 'jazz':17 'jb':27 'jewish':13C 'jolson':7B 'kosher':10C 'nostra':11C,12C 'old':2A 'oldies':19 'piano':3A 'prerock':26 'roll':4A 'sisters':9B 'soft':28 'swing':29 'the':1A 'va':21
                                    'tag_tracknum'  8
                                      'num_images'  1
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['swing', 'lindyhop']
                                        'tag_date'  2011
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620537032.3299913  (2021-05-09 07:10:32)
                             'size'  7383485