======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '224'
                                          'artist'  'The Dodos'
                                     'text_people'  'The Dodos'
                                         'release'  'Visiter'
                                           'title'  'Winter'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-JZFKS-1', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['indie', 'acoustic', 'indie folk', 'folk', 'indie pop']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '2008'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-indie'
                                             'bpm'  '106.643'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::XXX'                                         '0'
'COMM:ID3v1 Comment:XXX'                            '0'
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'TALB' (Album/Movie/Show title)                     'Visiter'
'TBPM' (BPM (beats per minute))                     '106.643'
'TCOM' (Composer)                                   'The Dodos'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-indie'
'TDRC' (Recording time)                             '2008'
'TENC' (Encoded by)                                 'iTunes v7.6'
'TIT2' (Title/songname/content description)         'Winter'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Dodos'
'TPE2' (Band/orchestra/accompaniment)               'The Dodos'
'TPUB' (Publisher)                                  'Cooperative'
'TRCK' (Track number/Position in set)               '6'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['indie', 'acoustic', 'indie folk', 'folk', 'indie pop']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.51 dB'
'TXXX:replaygain_track_peak'                        '0.389807'

========================== row from database ==========================
                                              'id'  1260367
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/The Dodos/Visiter/06 winter.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  224
                                           'genre'  ifs-songwriter-indie
                                        'filesize'  5433244
                                           'mtime'  1621489531
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 06 winter ifs songwriter indie
                                      'tag_artist'  The Dodos
                                     'tag_release'  Visiter
                                       'tag_title'  Winter
                                             'bpm'  106.643
                                    'search_title'  'winter':1
                                   'search_artist'  'dodos':2 'the':1
                                  'search_release'  'visiter':1
                                     'search_rest'  '00singer':1 'eos':3 'ifs':5 'indie':6 'songwriter':2 'winter':4
                                    'search_combo'  '00singer':5 'dodos':3B 'eos':7 'ifs':9 'indie':10 'songwriter':6 'the':2B 'visiter':4C 'winter':1A,8
                                    'tag_tracknum'  6
                                      'num_images'  1
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'acoustic', 'indie folk', 'folk', 'indie pop']
                                        'tag_date'  2008
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1621489531.4800577  (2021-05-20 07:45:31)
                             'size'  5433244