======================== unified (from filesystem) ========================
                                         'bitrate'  '262.294'
                                        'duration'  '205'
                                          'artist'  'Zayn'
                                     'text_people'  ''
                                         'release'  'Billboard Top 100 Year-End Charts'
                                           'title'  'Pillowtalk'
                                           'quals'  ("['Q-JZFKS-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-2', 'Q-UNU-1', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', "
 "'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['pop', 'rnb', 'british', 'sexy', 'male vocalists']"
                                     'discogstags'  "['pop', 'europop', 'electronic', 'euro house', 'happy hardcore']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '022'
                                      'tracktotal'  ''
                                            'date'  '2016'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted'
                                             'bpm'  '130.063'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::eng'                                         'Billboard Top 100 Year-End Charts 2016'
'COMM:ID3v1 Comment:XXX'                            'Billboard Top 100 Year-End C'
'TALB' (Album/Movie/Show title)                     'Billboard Top 100 Year-End Charts'
'TBPM' (BPM (beats per minute))                     '130.063'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-unsorted'
'TDRC' (Recording time)                             '2016'
'TENC' (Encoded by)                                 'Lame 3.99.5'
'TIT2' (Title/songname/content description)         'Pillowtalk'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Zayn'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '022'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['pop', 'europop', 'electronic', 'euro house', 'happy hardcore']
'TXXX:lastfmtags'                                   ['pop', 'rnb', 'british', 'sexy', 'male vocalists']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.97 dB'
'TXXX:replaygain_track_peak'                        '0.344099'

========================== row from database ==========================
                                              'id'  1330598
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/Billboard Hot 100 End Of Year Charts 2016/022. Zayn - Pillowtalk.mp3
                                         'working'  None
                                         'bitrate'  262
                                    'duration_sec'  205
                                           'genre'  electronic-generic or radio-unsorted
                                        'filesize'  6758425
                                           'mtime'  1620567733
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Hot Of 2016 022. electronic generic or radio unsorted
                                      'tag_artist'  Zayn
                                     'tag_release'  Billboard Top 100 Year-End Charts
                                       'tag_title'  Pillowtalk
                                             'bpm'  130.063
                                    'search_title'  'pillowtalk':1
                                   'search_artist'  'zayn':1
                                  'search_release'  '100':3 'billboard':1 'charts':7 'end':5 'top':2 'year':4 'yearend':6
                                     'search_rest'  '00poprockelectronic':1 '022':5,6 '2016':4 'electronic':7 'generic':8 'hot':2 'of':3 'or':9 'radio':10 'unsorted':11
                                    'search_combo'  '00poprockelectronic':10 '022':14,15 '100':5C '2016':13 'billboard':3C 'charts':9C 'electronic':16 'end':7C 'generic':17 'hot':11 'of':12 'or':18 'pillowtalk':1A 'radio':19 'top':4C 'unsorted':20 'year':6C 'yearend':8C 'zayn':2B
                                    'tag_tracknum'  22
                                      'num_images'  1
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-2', '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-3', 'q-other-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['pop', 'rnb', 'british', 'sexy', 'male vocalists']
                                        'tag_date'  2016
                                     'discogstags'  ['pop', 'europop', 'electronic', 'euro house', 'happy hardcore']

============================== file details ==============================
                                           'mtime'  1620567732.6274393  (2021-05-09 15:42:12)
                             'size'  6758425