======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '182'
                                          'artist'  'Peerless Quartet'
                                     'text_people'  ''
                                         'release'  'Ken Moe'
                                           'title'  'In Blinky, Winky, Chinky Chinatown'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-2', '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-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['spotify', 'all', 'cpdp', 'minstrel', 'acoustic era']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '00'
                                      'tracktotal'  ''
                                            'date'  '1916'
                                        'comments'  ''
                                           'genre'  'prerock-minstrel'
                                             'bpm'  '112.3'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Ken Moe'
'TBPM' (BPM (beats per minute))                     '112.3'
'TCON' (Content type, a.k.a. Genre)                 'prerock-minstrel'
'TDRC' (Recording time)                             '1916'
'TIT2' (Title/songname/content description)         'In Blinky, Winky, Chinky Chinatown'
'TKEY' (Initial key)                                '1A'
'TLEN' (Length)                                     '182000'
'TPE1' (Lead performer(s)/Soloist(s))               'Peerless Quartet'
'TRCK' (Track number/Position in set)               '00'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['spotify', 'all', 'cpdp', 'minstrel', 'acoustic era']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.14 dB'
'TXXX:replaygain_track_peak'                        '0.501849'

========================== row from database ==========================
                                              'id'  512904
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Wax Cylinder／very old recordings： 1878-1920 [wma／32k]/1916 - Peerless Quartet - In Blinky, Winky, Chinky Chinatown.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  182
                                           'genre'  prerock-minstrel
                                        'filesize'  3660553
                                           'mtime'  1642095527
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Wax Cylinder／very old recordings： 1878 1920 [wma／32k] 1916 prerock minstrel
                                      'tag_artist'  Peerless Quartet
                                     'tag_release'  Ken Moe
                                       'tag_title'  In Blinky, Winky, Chinky Chinatown
                                             'bpm'  112.3
                                    'search_title'  'blinky':2,3 'chinatown':7 'chinky':6 'in':1 'winky':4,5
                                   'search_artist'  'peerless':1 'quartet':2
                                  'search_release'  'ken':1 'moe':2
                                     'search_rest'  '1878':11 '1916':20 '1920':12 '32k':14,16,18 'cylinder':2,4 'cylindervery':6 'minstrel':22 'old':7 'prerock':21 'recordings':8,9,10 'very':3,5 'wax':1 'wma':13,15,17 'wma32k':19
                                    'search_combo'  '1878':22 '1916':31 '1920':23 '32k':25,27,29 'blinky':2A,3A 'chinatown':7A 'chinky':6A 'cylinder':13,15 'cylindervery':17 'in':1A 'ken':10C 'minstrel':33 'moe':11C 'old':18 'peerless':8B 'prerock':32 'quartet':9B 'recordings':19,20,21 'very':14,16 'wax':12 'winky':4A,5A 'wma':24,26,28 'wma32k':30
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-2', '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-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']
                                      'lastfmtags'  ['spotify', 'all', 'cpdp', 'minstrel', 'acoustic era']
                                        'tag_date'  1916
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1642095527.0451784  (2022-01-13 18:38:47)
                             'size'  3660553