======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '309'
                                          'artist'  'Bon Iver'
                                     'text_people'  ''
                                         'release'  '22, A Million'
                                           'title'  '8 (circle)'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['indie', 'acoustic', 'lo fi', 'folk', 'singer songwriter']"
                                     'discogstags'  "['indie pop', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '08'
                                      'tracktotal'  '10'
                                            'date'  '2016'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '125.939'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     '22, A Million'
'TBPM' (BPM (beats per minute))                     '125.939'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '2016'
'TIT2' (Title/songname/content description)         '8 (circle)'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Bon Iver'
'TPE2' (Band/orchestra/accompaniment)               'Bon Iver'
'TRCK' (Track number/Position in set)               '08/10'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['indie pop', 'pop']
'TXXX:lastfmtags'                                   ['indie', 'acoustic', 'lo fi', 'folk', 'singer songwriter']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.00 dB'
'TXXX:replaygain_track_peak'                        '0.622500'

========================== row from database ==========================
                                              'id'  1351843
                                            'path'  /data/Music/Bulk/00poprockelectronic/2016/Bon Iver - 8 (circle).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  309
                                           'genre'  ifs-songwriter
                                        'filesize'  12579693
                                           'mtime'  1637330711
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 2016 ifs songwriter
                                      'tag_artist'  Bon Iver
                                     'tag_release'  22, A Million
                                       'tag_title'  8 (circle)
                                             'bpm'  125.939
                                    'search_title'  '8':1 'circle':2,3
                                   'search_artist'  'bon':1 'iver':2
                                  'search_release'  '22':1,2 'a':3 'million':4
                                     'search_rest'  '00poprockelectronic':1 '2016':2 'ifs':3 'songwriter':4
                                    'search_combo'  '00poprockelectronic':10 '2016':11 '22':6C,7C '8':1A 'a':8C 'bon':4B 'circle':2A,3A 'ifs':12 'iver':5B 'million':9C 'songwriter':13
                                    'tag_tracknum'  8
                                      'num_images'  1
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'acoustic', 'lo fi', 'folk', 'singer songwriter']
                                        'tag_date'  2016
                                     'discogstags'  ['indie pop', 'pop']

============================== file details ==============================
                                           'mtime'  1637330711.3873186  (2021-11-19 15:05:11)
                             'size'  12579693