======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '151'
                                          'artist'  'Clyde McPhatter'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Twice As Nice'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['oldies', 'doo wop', 'rhythm and blues', 'soul', '60s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1959'
                                        'comments'  ''
                                           'genre'  'prerock-doowop'
                                             'bpm'  '87.862'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '59-520 POS 91'
'COMM:ID3v1 Comment:XXX'                            '59-520 POS 91'
'TBPM' (BPM (beats per minute))                     '87.862'
'TCON' (Content type, a.k.a. Genre)                 'prerock-doowop'
'TDRC' (Recording time)                             '1959'
'TIT2' (Title/songname/content description)         'Twice As Nice'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Clyde McPhatter'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['oldies', 'doo wop', 'rhythm and blues', 'soul', '60s']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.72 dB'
'TXXX:replaygain_track_peak'                        '0.331834'

========================== row from database ==========================
                                              'id'  1449178
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1959/59-520 - Clyde McPhatter - Twice As Nice.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  151
                                           'genre'  prerock-doowop
                                        'filesize'  6064504
                                           'mtime'  1621705425
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1959 59 520 prerock doowop
                                      'tag_artist'  Clyde McPhatter
                                     'tag_release'  None
                                       'tag_title'  Twice As Nice
                                             'bpm'  87.862
                                    'search_title'  'as':2 'nice':3 'twice':1
                                   'search_artist'  'clyde':1 'mc':3 'mcphatter':2 'phatter':4
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1959':6 '520':8 '59':7 'country':4 'doowop':10 'exotica':2 'jazz':1 'oldies':3 'prerock':9
                                    'search_combo'  '00oldiepop':12 '1959':13 '520':15 '59':14 'as':2A 'clyde':4B 'country':11 'doowop':17 'exotica':9 'jazz':8 'mc':6B 'mcphatter':5B 'nice':3A 'oldies':10 'phatter':7B 'prerock':16 'twice':1A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['oldies', 'doo wop', 'rhythm and blues', 'soul', '60s']
                                        'tag_date'  1959
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621705424.5141058  (2021-05-22 19:43:44)
                             'size'  6064504