======================== unified (from filesystem) ========================
                                         'bitrate'  '253.419'
                                        'duration'  '261'
                                          'artist'  'The Clear Wind Band'
                                     'text_people'  ''
                                         'release'  'Shanghai Jazz 2'
                                           'title'  'Shan Hai Yao Bai - The Shanghai Shuffle'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-3', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '14'
                                            'date'  '2007'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-soft-swing;loc-asia-china;set-pl-shirleyspinoza;set-pl-mor'
                                             'bpm'  '119'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::eng'                                         '7B'
'TALB' (Album/Movie/Show title)                     'Shanghai Jazz 2'
'TBPM' (BPM (beats per minute))                     '119'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-jb-jazz-soft-swing',
 'loc-asia-china',
 'set-pl-shirleyspinoza',
 'set-pl-mor']
'TDRC' (Recording time)                             '2007'
'TIT2' (Title/songname/content description)         'Shan Hai Yao Bai - The Shanghai Shuffle'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Clear Wind Band'
'TRCK' (Track number/Position in set)               '1/14'
'TSSE' (Software/Hardware and settings used for encoding)  ('Audiograbber 1.83.01, LAME dll 3.98, VBR 0 (Default method), Joint Stereo, '
 'High quality')
'TXXX:EnergyLevel'                                  '4'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.37 dB'
'TXXX:replaygain_track_peak'                        '0.476766'

========================== row from database ==========================
                                              'id'  745885
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Shanghai Jazz 2/01 Shan Hai Yao Bai - The Shanghai S.mp3
                                         'working'  None
                                         'bitrate'  253
                                    'duration_sec'  261
                                           'genre'  prerock-jb-jazz-soft-swing;loc-asia-china;set-pl-shirleyspinoza;set-pl-mor
                                        'filesize'  8420371
                                           'mtime'  1620534878
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 01 prerock jb jazz soft swing;loc asia china;set pl shirleyspinoza;set pl mor
                                      'tag_artist'  The Clear Wind Band
                                     'tag_release'  Shanghai Jazz 2
                                       'tag_title'  Shan Hai Yao Bai - The Shanghai Shuffle
                                             'bpm'  119.0
                                    'search_title'  'bai':4 'hai':2 'shan':1 'shanghai':6 'shuffle':7 'the':5 'yao':3
                                   'search_artist'  'band':4 'clear':2 'the':1 'wind':3
                                  'search_release'  '2':3 'jazz':2 'shanghai':1
                                     'search_rest'  'asia':12 'china':13,15 'country':4 'exotica':2 'jazz':1 'jb':6 'loc':9,11 'mor':22 'oldies':3 'pl':17 'prerock':5 'set':14,16,19,21 'shirleyspinoza':18,20 'soft':7 'swing':8,10
                                    'search_combo'  '2':14C 'asia':26 'bai':4A 'band':11B 'china':27,29 'clear':9B 'country':18 'exotica':16 'hai':2A 'jazz':13C,15 'jb':20 'loc':23,25 'mor':36 'oldies':17 'pl':31 'prerock':19 'set':28,30,33,35 'shan':1A 'shanghai':6A,12C 'shirleyspinoza':32,34 'shuffle':7A 'soft':21 'swing':22,24 'the':5A,8B 'wind':10B 'yao':3A
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  2007
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620534877.5398767  (2021-05-09 06:34:37)
                             'size'  8420371