======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '272'
                                          'artist'  'Liu Hong-jun'
                                     'text_people'  ''
                                         'release'  'Shirley & Spinoza'
                                           'title'  'China - Pipes of the Minority'
                                           'quals'  ("['Q-OLDST-2', 'Q-LOCALNESS-2', 'Q-JZFKS-1', 'Q-UNU-1', 'q-syn-2', "
 "'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-1', 'q-drums-3', "
 "'q-other-4', 'q-piano-1', 'q-vocals-1', 'Q-HHRNBTT-1', 'q-mixbeat-1']")
                                      'lastfmtags'  "['chinese', 'china', 'yunnan', 'hulusheng', 'hulusi']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '17'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'set-pl-shirleyspinoza;set-pl-mor'
                                             'bpm'  '131.328'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Shirley & Spinoza'
'TBPM' (BPM (beats per minute))                     '131.328'
'TCON' (Content type, a.k.a. Genre)                 ['set-pl-shirleyspinoza', 'set-pl-mor']
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'China - Pipes of the Minority'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Liu Hong-jun'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '17'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['chinese', 'china', 'yunnan', 'hulusheng', 'hulusi']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.17 dB'
'TXXX:replaygain_track_peak'                        '0.855674'

========================== row from database ==========================
                                              'id'  949077
                                            'path'  /data/Music/Bulk/sns/Liu Hong jun - China - Pipes of the Minority Peoples - He Bian Xi Xi Yunnan.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  272
                                           'genre'  set-pl-shirleyspinoza;set-pl-mor
                                        'filesize'  5462349
                                           'mtime'  1621488641
                                   'redo_metaread'  0
                                        'rest_str'   sns Peoples He Bian Xi Xi Yunnan set pl shirleyspinoza;set pl mor
                                      'tag_artist'  Liu Hong-jun
                                     'tag_release'  Shirley & Spinoza
                                       'tag_title'  China - Pipes of the Minority
                                             'bpm'  131.328
                                    'search_title'  'china':1 'minority':5 'of':3 'pipes':2 'the':4
                                   'search_artist'  'hong':2 'hongjun':4 'jun':3 'liu':1
                                  'search_release'  'shirley':1 'spinoza':2
                                     'search_rest'  'bian':4 'he':3 'mor':13 'peoples':2 'pl':8 'set':7,10,12 'shirleyspinoza':9,11 'sns':1 'xi':5 'yunnan':6
                                    'search_combo'  'bian':15 'china':1A 'he':14 'hong':7B 'hongjun':9B 'jun':8B 'liu':6B 'minority':5A 'mor':24 'of':3A 'peoples':13 'pipes':2A 'pl':19 'set':18,21,23 'shirley':10C 'shirleyspinoza':20,22 'sns':12 'spinoza':11C 'the':4A 'xi':16 'yunnan':17
                                    'tag_tracknum'  17
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-4', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['chinese', 'china', 'yunnan', 'hulusheng', 'hulusi']
                                        'tag_date'  2005
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621488641.0875413  (2021-05-20 07:30:41)
                             'size'  5462349