======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '194'
                                          'artist'  'Billy Jones & Ernest Hare'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Old King Tut'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-JZFKS-2', 'Q-UNU-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'  "['perfect', 'vaudeville', '1920s', 'all', 'acoustic era']"
                                     'discogstags'  "['novelty', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1923'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted;set-pl-shirleyspinoza;set-pl-mor'
                                             'bpm'  '111.517'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '111.517'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-jb-jazz-unsorted', 'set-pl-shirleyspinoza', 'set-pl-mor']
'TDRC' (Recording time)                             '1923'
'TIT2' (Title/songname/content description)         'Old King Tut'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Billy Jones & Ernest Hare'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['novelty', 'pop']
'TXXX:lastfmtags'                                   ['perfect', 'vaudeville', '1920s', 'all', 'acoustic era']
'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'                        '+2.92 dB'
'TXXX:replaygain_track_peak'                        '0.561511'

========================== row from database ==========================
                                              'id'  1448845
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1923/Billy Jones & Ernest Hare - Old King Tut 17-4-1923.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  194
                                           'genre'  prerock-jb-jazz-unsorted;set-pl-shirleyspinoza;set-pl-mor
                                        'filesize'  3890885
                                           'mtime'  1620525088
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1923 17 4 1923 prerock jb jazz unsorted;set pl shirleyspinoza;set pl mor
                                      'tag_artist'  Billy Jones & Ernest Hare
                                     'tag_release'  None
                                       'tag_title'  Old King Tut
                                             'bpm'  111.517
                                    'search_title'  'king':2 'old':1 'tut':3
                                   'search_artist'  'billy':1 'ernest':3 'hare':4 'jones':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1923':6 '4':7 'country':4 'exotica':2 'jazz':1 'jb':9 'mor':19 'oldies':3 'pl':14 'prerock':8 'set':11,13,16,18 'shirleyspinoza':15,17 'unsorted':10,12
                                    'search_combo'  '00oldiepop':12 '1923':13 '4':14 'billy':4B 'country':11 'ernest':6B 'exotica':9 'hare':7B 'jazz':8 'jb':16 'jones':5B 'king':2A 'mor':26 'old':1A 'oldies':10 'pl':21 'prerock':15 'set':18,20,23,25 'shirleyspinoza':22,24 'tut':3A 'unsorted':17,19
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', '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'  ['perfect', 'vaudeville', '1920s', 'all', 'acoustic era']
                                        'tag_date'  1923
                                     'discogstags'  ['novelty', 'pop']

============================== file details ==============================
                                           'mtime'  1620525087.5926487  (2021-05-09 03:51:27)
                             'size'  3890885