======================== unified (from filesystem) ========================
                                         'bitrate'  '160.636'
                                        'duration'  '231'
                                          'artist'  'Qhapaq Negros Singers'
                                     'text_people'  ''
                                         'release'  'Global Voices: Sacred'
                                           'title'  'Qhapaq Negros'
                                           'quals'  ("['Q-HAP-3', 'Q-OLDST-1', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-LOCALNESS-3', "
 "'Q-HHRNBTT-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '09'
                                      'tracktotal'  ''
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'loc-unsorted-mix'
                                             'bpm'  '144.233'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Global Voices: Sacred'
'TBPM' (BPM (beats per minute))                     '144.233'
'TCON' (Content type, a.k.a. Genre)                 'loc-unsorted-mix'
'TDRC' (Recording time)                             '1999'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Secure mode)'
'TIT2' (Title/songname/content description)         'Qhapaq Negros'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Qhapaq Negros Singers'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '09'
'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: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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.43 dB'
'TXXX:replaygain_track_peak'                        '0.450146'

========================== row from database ==========================
                                              'id'  471256
                                            'path'  /data/Music/Bulk/00localcharacter/VA. World 1： Trad/Sacred Global Voices (Music Of The World, 1999) [159-320kvbr]/09 - Qhapaq Negros Singers - Qhapaq Negros, Peru.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  231
                                           'genre'  loc-unsorted-mix
                                        'filesize'  4660152
                                           'mtime'  1621629890
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter VA. World 1： Trad (Music Of The World, 1999) [159 320kvbr] 09 Negros, Peru loc unsorted mix
                                      'tag_artist'  Qhapaq Negros Singers
                                     'tag_release'  Global Voices: Sacred
                                       'tag_title'  Qhapaq Negros
                                             'bpm'  144.233
                                    'search_title'  'negros':2 'qhapaq':1
                                   'search_artist'  'negros':2 'qhapaq':1 'singers':3
                                  'search_release'  'global':1 'sacred':4 'voices':2,3
                                     'search_rest'  '1':4,5,6 '159':15,16 '1999':13,14 '320kvbr':17,18 'loc':22 'mix':24 'music':8,9 'negros':19,20 'of':10 'peru':21 'the':11 'trad':7 'unsorted':23 'va':1,2 'world':3,12
                                    'search_combo'  '1':13,14,15 '159':24,25 '1999':22,23 '320kvbr':26,27 'global':6C 'loc':31 'mix':33 'music':17,18 'negros':2A,4B,28,29 'of':19 'peru':30 'qhapaq':1A,3B 'sacred':9C 'singers':5B 'the':20 'trad':16 'unsorted':32 'va':10,11 'voices':7C,8C 'world':12,21
                                    'tag_tracknum'  9
                                      'num_images'  1
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1999
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621629889.534335  (2021-05-21 22:44:49)
                             'size'  4660152