======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '246'
                                          'artist'  'Penguin Cafe Orchestra'
                                     'text_people'  ''
                                         'release'  'Concert Program (disc 2)'
                                           'title'  'Salty Bean Fumble'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-JZFKS-3', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'Q-PLAY-2', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-1', "
 "'Q-PIANO-2', 'q-chart-2', 'q-drums-1', 'q-other-4', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['instrumental', 'contemporary classical', 'new age', 'classical', 'ambient']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-soft-salon or easy'
                                             'bpm'  '144.438'
                                             'key'  '10B'
                                        '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)                     'Concert Program (disc 2)'
'TBPM' (BPM (beats per minute))                     '144.438'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-soft-salon or easy'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'Salty Bean Fumble'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Penguin Cafe Orchestra'
'TRCK' (Track number/Position in set)               '10'
'TXXX:FMPS_Rating'                                  '0.6'
'TXXX:MusicMagic Data'                              'AgEAMGjqmJe0rqO1gdXbbuVkgAGGK4DpFTGevQj3gGfXmYABheQJhqyrjletmIABig6AAcHyOILqrKOrgAG37gmrBdWAAaiGgAKAAZn5uECnrIIq2uYry8gUhoiAQQcmmqMb6oCizWCVSYLz+3GseYZ8tK6ACIbEgAG5vkTH2bqeCIABqUsDpeZ1inijaIHggAE='
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'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['instrumental', 'contemporary classical', 'new age', 'classical', 'ambient']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.27 dB'
'TXXX:replaygain_track_peak'                        '0.664747'

========================== row from database ==========================
                                              'id'  675650
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Penguin Cafe Orchestra/19. Salty Bean Fumble.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  246
                                           'genre'  prerock-jb-jazz-soft-salon or easy
                                        'filesize'  5912581
                                           'mtime'  1620533566
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 19. prerock jb jazz soft salon or easy
                                      'tag_artist'  Penguin Cafe Orchestra
                                     'tag_release'  Concert Program (disc 2)
                                       'tag_title'  Salty Bean Fumble
                                             'bpm'  144.438
                                    'search_title'  'bean':2 'fumble':3 'salty':1
                                   'search_artist'  'cafe':2 'orchestra':3 'penguin':1
                                  'search_release'  '2':5,6 'concert':1 'disc':3,4 'program':2
                                     'search_rest'  '19':5,6 'country':4 'easy':12 'exotica':2 'jazz':1 'jb':8 'oldies':3 'or':11 'prerock':7 'salon':10 'soft':9
                                    'search_combo'  '19':17,18 '2':11C,12C 'bean':2A 'cafe':5B 'concert':7C 'country':16 'disc':9C,10C 'easy':24 'exotica':14 'fumble':3A 'jazz':13 'jb':20 'oldies':15 'or':23 'orchestra':6B 'penguin':4B 'prerock':19 'program':8C 'salon':22 'salty':1A 'soft':21
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['instrumental', 'contemporary classical', 'new age', 'classical', 'ambient']
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620533566.3385785  (2021-05-09 06:12:46)
                             'size'  5912581