======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '192'
                                          'artist'  'M.I.A.'
                                     'text_people'  'Dave Taylor/Kyle Edwards攀攀'
                                         'release'  'Matangi'
                                           'title'  'Only 1 U'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-3', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['dance', 'female vocalists', 'indie', 'electronic', 'hip hop']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '15'
                                            'date'  '2013'
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism'
                                             'bpm'  '117.059'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Matangi'
'TBPM' (BPM (beats per minute))                     '117.059'
'TCOM' (Composer)                                   'Dave Taylor/Kyle Edwards攀攀'
'TCON' (Content type, a.k.a. Genre)                 'hip hop or rnb or rap or turntablism'
'TDRC' (Recording time)                             '2013'
'TIT2' (Title/songname/content description)         'Only 1 U'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'M.I.A.'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '3/15'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '3'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['dance', 'female vocalists', 'indie', 'electronic', 'hip hop']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.59 dB'
'TXXX:replaygain_track_peak'                        '0.277093'

========================== row from database ==========================
                                              'id'  1279775
                                            'path'  /data/Music/Bulk/00popandrock-hiphop-rap-rnb-turntablism/M.I.A. - M.I.A/Matangi/M.I.A. - Matangi [Album] @ 320/03 Only 1 U.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  192
                                           'genre'  hip hop or rnb or rap or turntablism
                                        'filesize'  8067039
                                           'mtime'  1620585605
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock hiphop rap rnb turntablism [Album] @ 320 03 hip hop or rnb or rap or turntablism
                                      'tag_artist'  M.I.A.
                                     'tag_release'  Matangi
                                       'tag_title'  Only 1 U
                                             'bpm'  117.059
                                    'search_title'  '1':2 'only':1 'u':3
                                   'search_artist'  'a':3 'i':2 'm':1 'mia':4
                                  'search_release'  'matangi':1
                                     'search_rest'  '320':7 'album':5,6 'hip':8 'hiphop':1 'hop':9 'or':10 'rap':2 'rnb':3 'turntablism':4
                                    'search_combo'  '1':2A '320':15 'a':6B 'album':13,14 'hip':16 'hiphop':9 'hop':17 'i':5B 'm':4B 'matangi':8C 'mia':7B 'only':1A 'or':18 'rap':10 'rnb':11 'turntablism':12 'u':3A
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-3', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'female vocalists', 'indie', 'electronic', 'hip hop']
                                        'tag_date'  2013
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620585604.727279  (2021-05-09 20:40:04)
                             'size'  8067039