======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '158'
                                          'artist'  'Weber & Fields'
                                     'text_people'  ''
                                         'release'  'Columbia-1855'
                                           'title'  'Restaurant Scene'
                                           'quals'  ("['Q-HAP-2', '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'  "['1910s', 'gramophone', 'comedy']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '119'
                                      'tracktotal'  ''
                                            'date'  '1915'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '112.2'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         'Debuted 1915 and peaked at #9 on Various Charts. Source: Pop Memories'
'TALB' (Album/Movie/Show title)                     'Columbia-1855'
'TBPM' (BPM (beats per minute))                     '112.2'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1915'
'TIT2' (Title/songname/content description)         'Restaurant Scene'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Weber & Fields'
'TRCK' (Track number/Position in set)               '119'
'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'                                   ['1910s', 'gramophone', 'comedy']
'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'                        '+1.82 dB'
'TXXX:replaygain_track_peak'                        '0.372362'

========================== row from database ==========================
                                              'id'  511216
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Wax Cylinder／very old recordings： 1878-1920 [wma／32k]/1915 - Weber & Fields - Restaurant Scene.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  158
                                           'genre'  prerock-unsorted
                                        'filesize'  2542821
                                           'mtime'  1678927394
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Wax Cylinder／very old recordings： 1878 1920 [wma／32k] 1915 prerock unsorted
                                      'tag_artist'  Weber & Fields
                                     'tag_release'  Columbia-1855
                                       'tag_title'  Restaurant Scene
                                             'bpm'  112.2
                                    'search_title'  'restaurant':1 'scene':2
                                   'search_artist'  'fields':2 'weber':1
                                  'search_release'  '1855':2 'columbia':1 'columbia1855':3
                                     'search_rest'  '1878':11 '1915':20 '1920':12 '32k':14,16,18 'cylinder':2,4 'cylindervery':6 'old':7 'prerock':21 'recordings':8,9,10 'unsorted':22 'very':3,5 'wax':1 'wma':13,15,17 'wma32k':19
                                    'search_combo'  '1855':6C '1878':18 '1915':27 '1920':19 '32k':21,23,25 'columbia':5C 'columbia1855':7C 'cylinder':9,11 'cylindervery':13 'fields':4B 'old':14 'prerock':28 'recordings':15,16,17 'restaurant':1A 'scene':2A 'unsorted':29 'very':10,12 'wax':8 'weber':3B 'wma':20,22,24 'wma32k':26
                                    'tag_tracknum'  119
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HAP-2', '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'  ['1910s', 'gramophone', 'comedy']
                                        'tag_date'  1915
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1678927393.6220121  (2023-03-16 01:43:13)
                             'size'  2542821