======================== unified (from filesystem) ========================
                                         'bitrate'  '96.0'
                                        'duration'  '132'
                                          'artist'  'Len Spencer'
                                     'text_people'  ''
                                         'release'  'Stomp and Swerve'
                                           'title'  "You Been A Good Ole Wagon But You've Done Broke Down"
                                           'quals'  ("['Q-HAP-2', '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-2', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['1900s', 'old fashioned', 'all', 'oldies', 'acoustic era']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '1896'
                                        'comments'  ''
                                           'genre'  'prerock-nonmusic'
                                             'bpm'  '85.2'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         'Debuted 1896 and peaked at #2 on Various Charts. Source: Pop Memories'
'TALB' (Album/Movie/Show title)                     'Stomp and Swerve'
'TBPM' (BPM (beats per minute))                     '85.2'
'TCON' (Content type, a.k.a. Genre)                 'prerock-nonmusic'
'TCOP' (Copyright message)                          'WB Renamer and Tagger v1.92'
'TDRC' (Recording time)                             '1896'
'TIT2' (Title/songname/content description)         "You Been A Good Ole Wagon But You've Done Broke Down"
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Len Spencer'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['1900s', 'old fashioned', 'all', 'oldies', 'acoustic era']
'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'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.73 dB'
'TXXX:replaygain_track_peak'                        '0.582868'

========================== row from database ==========================
                                              'id'  1512813
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Wax Cylinder／very old recordings： 1878-1920 [wma／32k]/1896 - Len Spencer - You Been A Good Ole Wagon But You_ve Done Broke Down.mp3
                                         'working'  None
                                         'bitrate'  96
                                    'duration_sec'  132
                                           'genre'  prerock-nonmusic
                                        'filesize'  1587043
                                           'mtime'  1674646640
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Wax Cylinder／very old recordings： 1878 1920 [wma／32k] 1896 You_ve prerock nonmusic
                                      'tag_artist'  Len Spencer
                                     'tag_release'  Stomp and Swerve
                                       'tag_title'  You Been A Good Ole Wagon But You've Done Broke Down
                                             'bpm'  85.2
                                    'search_title'  'a':3 'been':2 'broke':12 'but':7 'done':11 'down':13 'good':4 'ole':5 've':9 'wagon':6 'you':1,8 'youve':10
                                   'search_artist'  'len':1 'spencer':2
                                  'search_release'  'and':2 'stomp':1 'swerve':3
                                     'search_rest'  '1878':11 '1896':20 '1920':12 '32k':14,16,18 'cylinder':2,4 'cylindervery':6 'nonmusic':24 'old':7 'prerock':23 'recordings':8,9,10 've':22 'very':3,5 'wax':1 'wma':13,15,17 'wma32k':19 'you':21
                                    'search_combo'  '1878':29 '1896':38 '1920':30 '32k':32,34,36 'a':3A 'and':17C 'been':2A 'broke':12A 'but':7A 'cylinder':20,22 'cylindervery':24 'done':11A 'down':13A 'good':4A 'len':14B 'nonmusic':42 'old':25 'ole':5A 'prerock':41 'recordings':26,27,28 'spencer':15B 'stomp':16C 'swerve':18C 've':9A,40 'very':21,23 'wagon':6A 'wax':19 'wma':31,33,35 'wma32k':37 'you':1A,8A,39 'youve':10A
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HAP-2', '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-2', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']
                                      'lastfmtags'  ['1900s', 'old fashioned', 'all', 'oldies', 'acoustic era']
                                        'tag_date'  1896
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1674646639.6568766  (2023-01-25 12:37:19)
                             'size'  1587043