======================== unified (from filesystem) ========================
                                         'bitrate'  '169.087'
                                        'duration'  '156'
                                          'artist'  "Lightnin' Slim"
                                     'text_people'  ''
                                         'release'  'Play Me the Blues... (disc 3)'
                                           'title'  "Lightning's Bad Luck"
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-2', 'Q-JZFKS-3', 'Q-HHRNBTT-1', 'Q-UNU-1', "
 "'Q-OLDST-2', 'q-syn-1', 'q-bass-4', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['swamp blues', 'blues', 'missouri', 'harmonica']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-jb-blues'
                                             'bpm'  '130.819'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'POPM:Windows Media Player 9 Series'                POPM(email='Windows Media Player 9 Series', rating=128, count=0)
'TALB' (Album/Movie/Show title)                     'Play Me the Blues... (disc 3)'
'TBPM' (BPM (beats per minute))                     '130.819'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-blues'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Secure mode)'
'TIT2' (Title/songname/content description)         "Lightning's Bad Luck"
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               "Lightnin' Slim"
'TRCK' (Track number/Position in set)               '10'
'TXXX:FMPS_Rating'                                  '0.6'
'TXXX:MP3GAIN_MINMAX'                               '093,208'
'TXXX:MusicMagic Data'                              'AQEABN7BimWcbZvogg67rFHQgAGA6YT598WfWUC4hmHDU4ABgAEGy8R+w3HxsoABgJeAAa/96DrVzs5igAG4+e6P/kCAAZ+egAKAAQ=='
'TXXX:MusicMagic Fingerprint'                       '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'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['swamp blues', 'blues', 'missouri', 'harmonica']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.25 dB'
'TXXX:replaygain_track_peak'                        '0.693355'

========================== row from database ==========================
                                              'id'  1512570
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Unsorted/Lightnin_ Slim__Play Me the Blues... (disc 3)__10 - Lightning_s Bad Luck.mp3
                                         'working'  None
                                         'bitrate'  169
                                    'duration_sec'  156
                                           'genre'  prerock-jb-blues
                                        'filesize'  3315866
                                           'mtime'  1620402683
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Unsorted Lightnin_ Slim__Play 3)__10 Lightning_s prerock jb blues
                                      'tag_artist'  Lightnin' Slim
                                     'tag_release'  Play Me the Blues... (disc 3)
                                       'tag_title'  Lightning's Bad Luck
                                             'bpm'  130.819
                                    'search_title'  'bad':4 'lightning':1 'lightnings':3 'luck':5 's':2
                                   'search_artist'  'lightnin':1,2 'slim':3
                                  'search_release'  '3':8,9 'blues':4,5 'disc':6,7 'me':2 'play':1 'the':3
                                     'search_rest'  '10':10,12 '3':9,11 'blues':17 'country':4 'exotica':2 'jazz':1 'jb':16 'lightnin':6 'lightning':13 'oldies':3 'play':8 'prerock':15 's':14 'slim':7 'unsorted':5
                                    'search_combo'  '10':27,29 '3':16C,17C,26,28 'bad':4A 'blues':12C,13C,34 'country':21 'disc':14C,15C 'exotica':19 'jazz':18 'jb':33 'lightnin':6B,7B,23 'lightning':1A,30 'lightnings':3A 'luck':5A 'me':10C 'oldies':20 'play':9C,25 'prerock':32 's':2A,31 'slim':8B,24 'the':11C 'unsorted':22
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-4', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['swamp blues', 'blues', 'missouri', 'harmonica']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620402682.8906307  (2021-05-07 17:51:22)
                             'size'  3315866