======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '157'
                                          'artist'  'Fang-Teng Lee'
                                     'text_people'  ''
                                         'release'  'Sound of Magic Saw (Union CMX-8002 Mono)'
                                           'title'  'Dreams of Spring at the Riverside'
                                           'quals'  ("['Q-HAP-3', 'Q-OLDST-1', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                     'discogstags'  "['jazz', 'folk, world, & country', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '04'
                                      'tracktotal'  ''
                                            'date'  '1966'
                                        'comments'  ''
                                           'genre'  'loc-asia-china;mi-saw'
                                             'bpm'  '131.073'
                                             'key'  '4B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Sound of Magic Saw (Union CMX-8002 Mono)'
'TBPM' (BPM (beats per minute))                     '131.073'
'TCON' (Content type, a.k.a. Genre)                 ['loc-asia-china', 'mi-saw']
'TDRC' (Recording time)                             '1966'
'TENC' (Encoded by)                                 'Basic Hip Digital Oddio'
'TIT2' (Title/songname/content description)         'Dreams of Spring at the Riverside'
'TKEY' (Initial key)                                '4B'
'TPE1' (Lead performer(s)/Soloist(s))               'Fang-Teng Lee'
'TPE2' (Band/orchestra/accompaniment)               'Fang-Teng Lee'
'TRCK' (Track number/Position in set)               '04'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['jazz', 'folk, world, & country', 'pop']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.82 dB'
'TXXX:replaygain_track_peak'                        '0.841421'
'WXXX:'                                             WXXX(encoding=<Encoding.LATIN1: 0>, desc='', url='http://www.basichipdigitaloddio.com/365/')

========================== row from database ==========================
                                              'id'  1422509
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/012 Fang-Teng Lee - Sound of Magic Saw/04_dreams_of_spring_at_the_riverside.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  157
                                           'genre'  loc-asia-china;mi-saw
                                        'filesize'  6428835
                                           'mtime'  1620528016
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia 012 04_dreams_of_spring_at_the_riverside loc asia china;mi saw
                                      'tag_artist'  Fang-Teng Lee
                                     'tag_release'  Sound of Magic Saw (Union CMX-8002 Mono)
                                       'tag_title'  Dreams of Spring at the Riverside
                                             'bpm'  131.073
                                    'search_title'  'at':4 'dreams':1 'of':2 'riverside':6 'spring':3 'the':5
                                   'search_artist'  'fang':1 'fangteng':3 'lee':4 'teng':2
                                  'search_release'  '8002':8 'cmx':7 'cmx8002':9 'magic':3 'mono':10,11 'of':2 'saw':4 'sound':1 'union':5,6
                                     'search_rest'  '00asia':1 '04':2 'asia':10 'at':6 'china':11,13 'dreams':3 'loc':9 'mi':12,14 'of':4 'riverside':8 'saw':15 'spring':5 'the':7
                                    'search_combo'  '00asia':22 '04':23 '8002':18C 'asia':31 'at':4A,27 'china':32,34 'cmx':17C 'cmx8002':19C 'dreams':1A,24 'fang':7B 'fangteng':9B 'lee':10B 'loc':30 'magic':13C 'mi':33,35 'mono':20C,21C 'of':2A,12C,25 'riverside':6A,29 'saw':14C,36 'sound':11C 'spring':3A,26 'teng':8B 'the':5A,28 'union':15C,16C
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  4B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1966
                                     'discogstags'  ['jazz', 'folk, world, & country', 'pop']

============================== file details ==============================
                                           'mtime'  1620528015.5660038  (2021-05-09 04:40:15)
                             'size'  6428835