======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '143'
                                          'artist'  'Len Spencer                        '
                                     'text_people'  ''
                                         'release'  'Berliner-0142                       '
                                           'title'  "You Don't Stop the World From Going Round (Coon Song) (1899)             "
                                           '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'  "['all', 'oldies', 'old fashioned', '1900s', 'acoustic era']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '00'
                                      'tracktotal'  ''
                                            'date'  '1899'
                                        'comments'  ''
                                           'genre'  'prerock-nonmusic'
                                             'bpm'  '130.7'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Berliner-0142                       '
'TBPM' (BPM (beats per minute))                     '130.7'
'TCON' (Content type, a.k.a. Genre)                 'prerock-nonmusic'
'TDRC' (Recording time)                             '1899'
'TIT2' (Title/songname/content description)         "You Don't Stop the World From Going Round (Coon Song) (1899)             "
'TKEY' (Initial key)                                '2A'
'TLEN' (Length)                                     '143000'
'TPE1' (Lead performer(s)/Soloist(s))               'Len Spencer                        '
'TRCK' (Track number/Position in set)               '00'
'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'                                   ['all', 'oldies', 'old fashioned', '1900s', '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'                        '+3.38 dB'
'TXXX:replaygain_track_peak'                        '0.397272'

========================== row from database ==========================
                                              'id'  1505601
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Wax Cylinder／very old recordings： 1878-1920 [wma／32k]/1899 - Len Spencer - You Don_t Stop the World From Going Round (Coon Song) Berliner-0142.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  143
                                           'genre'  prerock-nonmusic
                                        'filesize'  2306276
                                           'mtime'  1674646634
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Wax Cylinder／very old recordings： 1878 1920 [wma／32k] Don_t prerock nonmusic
                                      'tag_artist'  Len Spencer                        
                                     'tag_release'  Berliner-0142                       
                                       'tag_title'  You Don't Stop the World From Going Round (Coon Song) (1899)             
                                             'bpm'  130.7
                                    'search_title'  '1899':15,16 'coon':11,12 'don':2 'dont':4 'from':8 'going':9 'round':10 'song':13,14 'stop':5 't':3 'the':6 'world':7 'you':1
                                   'search_artist'  'len':1 'spencer':2
                                  'search_release'  '0142':2 'berliner':1 'berliner0142':3
                                     'search_rest'  '1878':11 '1920':12 '32k':14,16,18 'cylinder':2,4 'cylindervery':6 'don':20 'nonmusic':23 'old':7 'prerock':22 'recordings':8,9,10 't':21 'very':3,5 'wax':1 'wma':13,15,17 'wma32k':19
                                    'search_combo'  '0142':20C '1878':32 '1899':15A,16A '1920':33 '32k':35,37,39 'berliner':19C 'berliner0142':21C 'coon':11A,12A 'cylinder':23,25 'cylindervery':27 'don':2A,41 'dont':4A 'from':8A 'going':9A 'len':17B 'nonmusic':44 'old':28 'prerock':43 'recordings':29,30,31 'round':10A 'song':13A,14A 'spencer':18B 'stop':5A 't':3A,42 'the':6A 'very':24,26 'wax':22 'wma':34,36,38 'wma32k':40 'world':7A 'you':1A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  2A
                                           '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'  ['all', 'oldies', 'old fashioned', '1900s', 'acoustic era']
                                        'tag_date'  1899
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1674646633.6888127  (2023-01-25 12:37:13)
                             'size'  2306276