======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '53'
                                          'artist'  '[unknown]'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Kentucky Fried Chicken'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1960'
                                        'comments'  ''
                                           'genre'  'nonmusic-commercials'
                                             'bpm'  '94.239'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'COMM:MusicMatch_Preference:eng'                    'Bloopers'
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\xf8\r2\x1f\xe2\xa0Oi\xbd\xbd\xea5\x89\x92\xa7\xeaTNb\xd9M\xac*\xe3\x05x\xe1Yd@e\x1aC\xd3\x17Pv\x16\xa3\x9d\xe0\x928\r\\\x11\xb9}\xf5\x85\xb2\x16^9\x01\x0eKl\xe7\xac\xd1\xf8\xe6\x8d\x84R:\x9aT+\x19H<\x8bt\x05\xbbeBm\xcer\x9d\x89Y\xd9\xa1\xf4:5\xb7P\xa7;')
'TBPM' (BPM (beats per minute))                     '94.239'
'TCON' (Content type, a.k.a. Genre)                 'nonmusic-commercials'
'TDRC' (Recording time)                             '1960'
'TIT2' (Title/songname/content description)         'Kentucky Fried Chicken'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               '[unknown]'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.63 dB'
'TXXX:replaygain_track_peak'                        '0.381986'

========================== row from database ==========================
                                              'id'  957902
                                            'path'  /data/Music/Bulk/0nonmusic/00commercials-tv-radio-movietrailer/commercial_psa/tv - Kentucky Fried Chicken.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  53
                                           'genre'  nonmusic-commercials
                                        'filesize'  1072948
                                           'mtime'  1620525467
                                   'redo_metaread'  0
                                        'rest_str'   0nonmusic 00commercials tv radio movietrailer commercial_psa tv nonmusic commercials
                                      'tag_artist'  [unknown]
                                     'tag_release'  None
                                       'tag_title'  Kentucky Fried Chicken
                                             'bpm'  94.239
                                    'search_title'  'chicken':3 'fried':2 'kentucky':1
                                   'search_artist'  'unknown':1,2
                                  'search_release'  
                                     'search_rest'  '00commercials':2 '0nonmusic':1 'commercial':6 'commercials':9 'movietrailer':5 'nonmusic':8 'psa':7 'radio':4 'tv':3
                                    'search_combo'  '00commercials':7 '0nonmusic':6 'chicken':3A 'commercial':11 'commercials':14 'fried':2A 'kentucky':1A 'movietrailer':10 'nonmusic':13 'psa':12 'radio':9 'tv':8 'unknown':4B,5B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           '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-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['mysterious', 'unknown', 'all', 'mistagged artist', 'rock']
                                        'tag_date'  1960
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620525466.8136127  (2021-05-09 03:57:46)
                             'size'  1072948