======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '314'
                                          'artist'  'Chen Yi'
                                     'text_people'  ''
                                         'release'  'Tellus #19: New Music China'
                                           'title'  '"Xie Zi" for traditional ensemble'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-3', 'q-syn-2', 'q-bass-1', 'q-busy-3', "
 "'q-grit-2', 'q-play-2', 'Q-OLDST-3', 'q-chart-1', 'q-drums-2', 'q-other-4', "
 "'q-piano-1', 'q-vocals-3', 'Q-HHRNBTT-1', 'q-mixbeat-1', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['chinese', 'contemporary classical', 'classical', 'industrial', 'composer']"
                                     'discogstags'  "['classical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '13'
                                      'tracktotal'  ''
                                            'date'  '1988'
                                        'comments'  ''
                                           'genre'  'electronic-experimental-oddness'
                                             'bpm'  '103.1'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Tellus #19: New Music China'
'TBPM' (BPM (beats per minute))                     '103.1'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'electronic-experimental-oddness'
'TDRC' (Recording time)                             '1988'
'TIT2' (Title/songname/content description)         '"Xie Zi" for traditional ensemble'
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               'Chen Yi'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '13'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '3'
'TXXX:discogstags'                                  'classical'
'TXXX:lastfmtags'                                   ['chinese', 'contemporary classical', 'classical', 'industrial', 'composer']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+2.09 dB'
'TXXX:replaygain_track_peak'                        '0.725140'

========================== row from database ==========================
                                              'id'  338745
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Tellus Audio Cassette Magazine/1988 - Tellus #19 - New Music China/13 - Chen Yi - Xie Zi for traditional ensemble.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  314
                                           'genre'  electronic-experimental-oddness
                                        'filesize'  7580096
                                           'mtime'  1636915927
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Audio Cassette Magazine 1988 13 electronic experimental oddness
                                      'tag_artist'  Chen Yi
                                     'tag_release'  Tellus #19: New Music China
                                       'tag_title'  "Xie Zi" for traditional ensemble
                                             'bpm'  103.1
                                    'search_title'  'ensemble':5 'for':3 'traditional':4 'xie':1 'zi':2
                                   'search_artist'  'chen':1 'yi':2
                                  'search_release'  '19':2,3 'china':6 'music':5 'new':4 'tellus':1
                                     'search_rest'  '1988':4 'audio':1 'cassette':2 'electronic':5 'experimental':6 'magazine':3 'oddness':7
                                    'search_combo'  '19':9C,10C '1988':17 'audio':14 'cassette':15 'chen':6B 'china':13C 'electronic':18 'ensemble':5A 'experimental':19 'for':3A 'magazine':16 'music':12C 'new':11C 'oddness':20 'tellus':8C 'traditional':4A 'xie':1A 'yi':7B 'zi':2A
                                    'tag_tracknum'  13
                                      'num_images'  1
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-1', 'q-other-4', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['chinese', 'contemporary classical', 'classical', 'industrial', 'composer']
                                        'tag_date'  1988
                                     'discogstags'  ['classical']

============================== file details ==============================
                                           'mtime'  1636915926.8550558  (2021-11-14 19:52:06)
                             'size'  7580096