======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '145'
                                          'artist'  'The Ditty Bops'
                                     'text_people'  ''
                                         'release'  'The Ditty Bops'
                                           'title'  'Sister Kate'
                                           'quals'  ("['Q-HAP-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-JZFKS-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['indie', 'indie pop', 'cabaret', 'female vocalists', 'folk']"
                                     'discogstags'  "['jazz', 'blues', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-indie;set-pl-sced'
                                             'bpm'  '102.437'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'The Ditty Bops'
'TBPM' (BPM (beats per minute))                     '102.437'
'TCON' (Content type, a.k.a. Genre)                 ['ifs-songwriter-indie', 'set-pl-sced']
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         'Sister Kate'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Ditty Bops'
'TPE2' (Band/orchestra/accompaniment)               'The Ditty Bops'
'TRCK' (Track number/Position in set)               '4'
'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'                                  ['jazz', 'blues', 'pop']
'TXXX:lastfmtags'                                   ['indie', 'indie pop', 'cabaret', 'female vocalists', 'folk']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.69 dB'
'TXXX:replaygain_track_peak'                        '0.449929'

========================== row from database ==========================
                                              'id'  422590
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/The Ditty Bops/[2004] The Ditty Bops/04 Sister Kate.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  145
                                           'genre'  ifs-songwriter-indie;set-pl-sced
                                        'filesize'  5890190
                                           'mtime'  1621489510
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos [2004] 04 ifs songwriter indie;set pl sced
                                      'tag_artist'  The Ditty Bops
                                     'tag_release'  The Ditty Bops
                                       'tag_title'  Sister Kate
                                             'bpm'  102.437
                                    'search_title'  'kate':2 'sister':1
                                   'search_artist'  'bops':3 'ditty':2 'the':1
                                  'search_release'  'bops':3 'ditty':2 'the':1
                                     'search_rest'  '00singer':1 '2004':4,5 'eos':3 'ifs':6 'indie':7,9 'pl':11 'sced':12 'set':8,10 'songwriter':2
                                    'search_combo'  '00singer':9 '2004':12,13 'bops':5B,8C 'ditty':4B,7C 'eos':11 'ifs':14 'indie':15,17 'kate':2A 'pl':19 'sced':20 'set':16,18 'sister':1A 'songwriter':10 'the':3B,6C
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'indie pop', 'cabaret', 'female vocalists', 'folk']
                                        'tag_date'  2004
                                     'discogstags'  ['jazz', 'blues', 'pop']

============================== file details ==============================
                                           'mtime'  1621489509.961779  (2021-05-20 07:45:09)
                             'size'  5890190