======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '970'
                                          'artist'  'Peking Opera Troupe'
                                     'text_people'  ''
                                         'release'  'Red Detachment of Women'
                                           'title'  ('Scene One: Road to Revolution / Scene Two: Ching-Hua tells of her grievances '
 'and joins the red army')
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1972'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '143.2'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::eng'                                         'blog.wfmu.org'
'TALB' (Album/Movie/Show title)                     'Red Detachment of Women'
'TBPM' (BPM (beats per minute))                     '143.2'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '1972'
'TIT2' (Title/songname/content description)         ('Scene One: Road to Revolution / Scene Two: Ching-Hua tells of her grievances '
 'and joins the red army')
'TKEY' (Initial key)                                '1B'
'TPE1' (Lead performer(s)/Soloist(s))               'Peking Opera Troupe'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.64 dB'
'TXXX:replaygain_track_peak'                        '0.707870'

========================== row from database ==========================
                                              'id'  660250
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/10/282_2_Peking_Opera_Troupe_-_Red_Detachment_of_Women_-_Side_Two.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  970
                                           'genre'  electronic-unsorted
                                        'filesize'  31847708
                                           'mtime'  1620515896
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 10 282_2_Peking_Opera_Troupe_ _Red_Detachment_of_Women_ _Side_Two electronic unsorted
                                      'tag_artist'  Peking Opera Troupe
                                     'tag_release'  Red Detachment of Women
                                       'tag_title'  Scene One: Road to Revolution / Scene Two: Ching-Hua tells of her grievances and joins the red army
                                             'bpm'  143.2
                                    'search_title'  'and':16 'army':20 'ching':9 'chinghua':11 'grievances':15 'her':14 'hua':10 'joins':17 'of':13 'one':2,3 'red':19 'revolution':6 'road':4 'scene':1 'tells':12 'the':18 'to':5 'two':7,8
                                   'search_artist'  'opera':2 'peking':1 'troupe':3
                                  'search_release'  'detachment':2 'of':3 'red':1 'women':4
                                     'search_rest'  '2':2 '282':1 'detachment':7 'electronic':12 'of':8 'opera':4 'peking':3 'red':6 'side':10 'troupe':5 'two':11 'unsorted':13 'women':9
                                    'search_combo'  '2':29 '282':28 'and':16A 'army':20A 'ching':9A 'chinghua':11A 'detachment':25C,34 'electronic':39 'grievances':15A 'her':14A 'hua':10A 'joins':17A 'of':13A,26C,35 'one':2A,3A 'opera':22B,31 'peking':21B,30 'red':19A,24C,33 'revolution':6A 'road':4A 'scene':1A 'side':37 'tells':12A 'the':18A 'to':5A 'troupe':23B,32 'two':7A,8A,38 'unsorted':40 'women':27C,36
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  1B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1972
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620515895.5886545  (2021-05-09 01:18:15)
                             'size'  31847708