======================== unified (from filesystem) ========================
                                         'bitrate'  '172.382'
                                        'duration'  '129'
                                          'artist'  'Staten Island Ferry'
                                     'text_people'  ''
                                         'release'  'Bubblegum MF #35'
                                           'title'  'Candy Bar'
                                           'quals'  ("['Q-OLDST-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-1']")
                                     'discogstags'  "['pop rock', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '07'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'set-th-candy'
                                             'bpm'  '136.828'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'PRIV:AverageLevel:{\x16\x00\x00'                   PRIV(owner='AverageLevel', data=b'{\x16\x00\x00')
'PRIV:PeakValue:¡\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xa1\x7f\x00\x00')
'TALB' (Album/Movie/Show title)                     'Bubblegum MF #35'
'TBPM' (BPM (beats per minute))                     '136.828'
'TCON' (Content type, a.k.a. Genre)                 'set-th-candy'
'TIT2' (Title/songname/content description)         'Candy Bar'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Staten Island Ferry'
'TPE2' (Band/orchestra/accompaniment)               'Staten Island Ferry'
'TRCK' (Track number/Position in set)               '07'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['pop rock', 'pop']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.15 dB'
'TXXX:replaygain_track_peak'                        '0.498273'

========================== row from database ==========================
                                              'id'  735962
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/sweets/Staten Island Ferry - Candy Bar.mp3
                                         'working'  None
                                         'bitrate'  172
                                    'duration_sec'  129
                                           'genre'  set-th-candy
                                        'filesize'  2794237
                                           'mtime'  1620343125
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country sweets set th candy
                                      'tag_artist'  Staten Island Ferry
                                     'tag_release'  Bubblegum MF #35
                                       'tag_title'  Candy Bar
                                             'bpm'  136.828
                                    'search_title'  'bar':2 'candy':1
                                   'search_artist'  'ferry':3 'island':2 'staten':1
                                  'search_release'  '35':3,4 'bubblegum':1 'mf':2
                                     'search_rest'  'candy':8 'country':4 'exotica':2 'jazz':1 'oldies':3 'set':6 'sweets':5 'th':7
                                    'search_combo'  '35':8C,9C 'bar':2A 'bubblegum':6C 'candy':1A,17 'country':13 'exotica':11 'ferry':5B 'island':4B 'jazz':10 'mf':7C 'oldies':12 'set':15 'staten':3B 'sweets':14 'th':16
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-3', 'q-syn-1', 'q-chart-2', 'q-other-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  ['pop rock', 'pop']

============================== file details ==============================
                                           'mtime'  1620343124.5338042  (2021-05-07 01:18:44)
                             'size'  2794237