======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '199'
                                          'artist'  'Ernest Hare & Billy Jones'
                                     'text_people'  ''
                                         'release'  'Billboard 1928'
                                           'title'  'Mr. Hoover And Mr. Smith'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', '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-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['vaudeville', '1920s', 'perfect', 'acoustic era', 'all']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '197'
                                      'tracktotal'  ''
                                            'date'  '1928'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '126.885'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         'Debuted 1928 and peaked at #17 on Various Charts. Source: Pop Memories'
'COMM:ID3v1 Comment:XXX'                            'Debuted 1928 and peaked at #'
'TALB' (Album/Movie/Show title)                     'Billboard 1928'
'TBPM' (BPM (beats per minute))                     '126.885'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1928'
'TIT2' (Title/songname/content description)         'Mr. Hoover And Mr. Smith'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ernest Hare & Billy Jones'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '197'
'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'                                   ['vaudeville', '1920s', 'perfect', 'acoustic era', 'all']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'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'                        '+1.99 dB'
'TXXX:replaygain_track_peak'                        '0.363727'

========================== row from database ==========================
                                              'id'  978402
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Billboard 1928/1928_197 - Billy Jones & Ernest Hare - Mr. Hoover And Mr. Smith 128 JS (3.19).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  199
                                           'genre'  prerock-unsorted
                                        'filesize'  3191871
                                           'mtime'  1621697513
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 1928_197 128 JS (3.19) prerock unsorted
                                      'tag_artist'  Ernest Hare & Billy Jones
                                     'tag_release'  Billboard 1928
                                       'tag_title'  Mr. Hoover And Mr. Smith
                                             'bpm'  126.885
                                    'search_title'  'and':4 'hoover':3 'mr':1,2 'smith':5
                                   'search_artist'  'billy':3 'ernest':1 'hare':2 'jones':4
                                  'search_release'  '1928':2 'billboard':1
                                     'search_rest'  '128':7 '19':10 '1928':5 '197':6 '3':9 '319':11 'country':4 'exotica':2 'jazz':1 'js':8 'oldies':3 'prerock':12 'unsorted':13
                                    'search_combo'  '128':18 '19':21 '1928':11C,16 '197':17 '3':20 '319':22 'and':4A 'billboard':10C 'billy':8B 'country':15 'ernest':6B 'exotica':13 'hare':7B 'hoover':3A 'jazz':12 'jones':9B 'js':19 'mr':1A,2A 'oldies':14 'prerock':23 'smith':5A 'unsorted':24
                                    'tag_tracknum'  197
                                      'num_images'  0
                                             'key'  1A
                                           '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-2', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['vaudeville', '1920s', 'perfect', 'acoustic era', 'all']
                                        'tag_date'  1928
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621697512.8354783  (2021-05-22 17:31:52)
                             'size'  3191871