======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '138'
                                          'artist'  'Paul Evans with The Curls'
                                     'text_people'  ''
                                         'release'  '25 All-Time Novelty Hits '
                                           'title'  '(Seven Little Girls) Sitting In The Back Seat'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '1959'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '123.482'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '59-082 POS 9'
'COMM:ID3v1 Comment:XXX'                            '59-082 POS 9'
'TALB' (Album/Movie/Show title)                     '25 All-Time Novelty Hits '
'TBPM' (BPM (beats per minute))                     '123.482'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1959'
'TENC' (Encoded by)                                 'BigD'
'TIT2' (Title/songname/content description)         '(Seven Little Girls) Sitting In The Back Seat'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Paul Evans with The Curls'
'TRCK' (Track number/Position in set)               '6'
'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:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'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'                        '+1.35 dB'
'TXXX:replaygain_track_peak'                        '0.358563'

========================== row from database ==========================
                                              'id'  1450996
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1959/59-082 - Paul Evans with The Curls - (Seven Little Girls) Sitting In The Back Seat.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  138
                                           'genre'  prerock-unsorted
                                        'filesize'  5521280
                                           'mtime'  1621698395
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1959 59 082 prerock unsorted
                                      'tag_artist'  Paul Evans with The Curls
                                     'tag_release'  25 All-Time Novelty Hits 
                                       'tag_title'  (Seven Little Girls) Sitting In The Back Seat
                                             'bpm'  123.482
                                    'search_title'  'back':9 'girls':4,5 'in':7 'little':3 'seat':10 'seven':1,2 'sitting':6 'the':8
                                   'search_artist'  'curls':5 'evans':2 'paul':1 'the':4 'with':3
                                  'search_release'  '25':1 'all':2 'alltime':4 'hits':6 'novelty':5 'time':3
                                     'search_rest'  '00oldiepop':5 '1959':6 '59':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8 'unsorted':9
                                    'search_combo'  '00oldiepop':26 '1959':27 '25':16C '59':28 'all':17C 'alltime':19C 'back':9A 'country':25 'curls':15B 'evans':12B 'exotica':23 'girls':4A,5A 'hits':21C 'in':7A 'jazz':22 'little':3A 'novelty':20C 'oldies':24 'paul':11B 'prerock':29 'seat':10A 'seven':1A,2A 'sitting':6A 'the':8A,14B 'time':18C 'unsorted':30 'with':13B
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  10A
                                           '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-2', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1959
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621698394.7660756  (2021-05-22 17:46:34)
                             'size'  5521280