======================== unified (from filesystem) ========================
                                         'bitrate'  '191.967'
                                        'duration'  '152'
                                          'artist'  'Pat Boone'
                                     'text_people'  ''
                                         'release'  'The Rock Box (Disc 1)'
                                           'title'  'Speedy Gonzales'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', "
 "'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                                      'lastfmtags'  "['oldies', '60s', 'country', 'pop', 'swing', '50s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '19'
                                      'tracktotal'  ''
                                            'date'  '1965'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '143.721'
                                             'key'  '1B'
                                        '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)                     'The Rock Box (Disc 1)'
'TBPM' (BPM (beats per minute))                     '143.721'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1965'
'TIT2' (Title/songname/content description)         'Speedy Gonzales'
'TKEY' (Initial key)                                '1B'
'TPE1' (Lead performer(s)/Soloist(s))               'Pat Boone'
'TRCK' (Track number/Position in set)               '19'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:added_timestamp'                              '128930990202923527'
'TXXX:lastfmtags'                                   ['oldies', '60s', 'country', 'pop', 'swing', '50s']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+3.51 dB'
'TXXX:replaygain_track_peak'                        '0.436207'

========================== row from database ==========================
                                              'id'  1351388
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/The Rock Box (disc 1)-19-Pat Boone-Speedy Gonzales.mp3
                                         'working'  None
                                         'bitrate'  191
                                    'duration_sec'  152
                                           'genre'  prerock-unsorted
                                        'filesize'  3658885
                                           'mtime'  1620388050
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] (disc 19 prerock unsorted
                                      'tag_artist'  Pat Boone
                                     'tag_release'  The Rock Box (Disc 1)
                                       'tag_title'  Speedy Gonzales
                                             'bpm'  143.721
                                    'search_title'  'gonzales':2 'speedy':1
                                   'search_artist'  'boone':2 'pat':1
                                  'search_release'  '1':6,7 'box':3 'disc':4,5 'rock':2 'the':1
                                     'search_rest'  '00poprockelectronic':1 '19':9 'disc':7,8 'files':5,6 'loose':3,4 'prerock':10 'unsorted':2
                                    'search_combo'  '00poprockelectronic':12 '1':10C,11C '19':20 'boone':4B 'box':7C 'disc':8C,9C,18,19 'files':16,17 'gonzales':2A 'loose':14,15 'pat':3B 'prerock':21 'rock':6C 'speedy':1A 'the':5C 'unsorted':13
                                    'tag_tracknum'  19
                                      'num_images'  0
                                             'key'  1B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-2', 'q-syn-2', 'q-chart-3', 'q-other-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['oldies', '60s', 'country', 'pop', 'swing', '50s']
                                        'tag_date'  1965
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620388050.2160182  (2021-05-07 13:47:30)
                             'size'  3658885