======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '143'
                                          'artist'  'Sam Cooke'
                                     'text_people'  ''
                                         'release'  'Portrait of a Legend 1951-1964'
                                           'title'  'Summertime'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['oldies', '60s', 'rnb', 'soul', 'gospel', 'rhythm and blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '417'
                                      'tracktotal'  ''
                                            'date'  '1957'
                                        'comments'  ''
                                           'genre'  'prerock-soul'
                                             'bpm'  '84.773'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Portrait of a Legend 1951-1964'
'TBPM' (BPM (beats per minute))                     '84.773'
'TCON' (Content type, a.k.a. Genre)                 'prerock-soul'
'TDRC' (Recording time)                             '1957'
'TIT2' (Title/songname/content description)         'Summertime'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Sam Cooke'
'TRCK' (Track number/Position in set)               '417'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['oldies', '60s', 'rnb', 'soul', 'gospel', 'rhythm and blues']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.22 dB'
'TXXX:replaygain_track_peak'                        '0.419907'

========================== row from database ==========================
                                              'id'  1428542
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1957/57-417 - Sam Cooke - Summertime.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  143
                                           'genre'  prerock-soul
                                        'filesize'  5732224
                                           'mtime'  1642095549
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1957 57 417 prerock soul
                                      'tag_artist'  Sam Cooke
                                     'tag_release'  Portrait of a Legend 1951-1964
                                       'tag_title'  Summertime
                                             'bpm'  84.773
                                    'search_title'  'summertime':1
                                   'search_artist'  'cooke':2 'sam':1
                                  'search_release'  '1951':5 '19511964':7 '1964':6 'a':3 'legend':4 'of':2 'portrait':1
                                     'search_rest'  '00oldiepop':5 '1957':6 '417':8 '57':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 'soul':10
                                    'search_combo'  '00oldiepop':15 '1951':8C '19511964':10C '1957':16 '1964':9C '417':18 '57':17 'a':6C 'cooke':3B 'country':14 'exotica':12 'jazz':11 'legend':7C 'of':5C 'oldies':13 'portrait':4C 'prerock':19 'sam':2B 'soul':20 'summertime':1A
                                    'tag_tracknum'  417
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HAP-2', 'Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-1', 'q-play-2', 'q-chart-1', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']
                                      'lastfmtags'  ['oldies', '60s', 'rnb', 'soul', 'gospel', 'rhythm and blues']
                                        'tag_date'  1957
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1642095549.2183805  (2022-01-13 18:39:09)
                             'size'  5732224