======================== unified (from filesystem) ========================
                                         'bitrate'  '212.102'
                                        'duration'  '119'
                                          'artist'  'Bert en Ernie'
                                     'text_people'  ''
                                         'release'  'Bert en Ernie vervelen zich nooit...'
                                           'title'  'Ernie Zingt Een Zacht Liedje'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  '[\'comedy\', \'usa\', "children\'s songs", \'silly\', \'kids\']'
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '06'
                                      'tracktotal'  '13'
                                            'date'  '1981'
                                        'comments'  ''
                                           'genre'  'loc-eur-netherlands;entertaining-unsorted;set-th-childrensmusic or educational'
                                             'bpm'  '132.9'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'APIC:CD Front Cover'                               type PictureType.COVER_FRONT (Cover (front)) b'CD Front Cover'
                                     
'MCDI' (Music CD identifier)                        MCDI(data=b'\x00r\x01\r\x00\x10\x01\x00\x00\x00\x00!\x00\x10\x02\x00\x00\x00\x0e\x88\x00\x10\x03\x00\x00\x00B*\x00\x10\x04\x00\x00\x00k\xf1\x00\x10\x05\x00\x00\x01\x10\xab\x00\x10\x06\x00\x00\x01C\x00\x00\x10\x07\x00\x00\x01e\xec\x00\x10\x08\x00\x00\x01~\xc6\x00\x10\t\x00\x00\x01\xcb\x95\x00\x10\n\x00\x00\x02\x1b\xfb\x00\x10\x0b\x00\x00\x02+\xd0\x00\x10\x0c\x00\x00\x02Y\xb8\x00\x10\r\x00\x00\x02\x8a\x05\x00\x10\xaa\x00\x00\x03\t`\xff\xff')
'TALB' (Album/Movie/Show title)                     'Bert en Ernie vervelen zich nooit...'
'TBPM' (BPM (beats per minute))                     '132.9'
'TCON' (Content type, a.k.a. Genre)                 ['loc-eur-netherlands',
 'entertaining-unsorted',
 'set-th-childrensmusic or educational']
'TDRC' (Recording time)                             '1981'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Veilige mode)'
'TIT2' (Title/songname/content description)         'Ernie Zingt Een Zacht Liedje'
'TKEY' (Initial key)                                '6B'
'TLEN' (Length)                                     '119200'
'TPE1' (Lead performer(s)/Soloist(s))               'Bert en Ernie'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '06/13'
'TSSE' (Software/Hardware and settings used for encoding)  'LAME.EXE -V 2 --vbr-new'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['comedy', 'usa', "children's songs", 'silly', 'kids']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.37 dB'
'TXXX:replaygain_track_peak'                        '0.917385'

========================== row from database ==========================
                                              'id'  1358333
                                            'path'  /data/Music/Bulk/00spent/Bert en Ernie/Vervelen zich nooit... (NL 1981)/Bert en Ernie - Bert en Ernie vervelen zich nooit... - 06 - Ernie Zingt Een Zacht Liedje.mp3
                                         'working'  None
                                         'bitrate'  212
                                    'duration_sec'  119
                                           'genre'  loc-eur-netherlands;entertaining-unsorted;set-th-childrensmusic or educational
                                        'filesize'  3161910
                                           'mtime'  1621630314
                                   'redo_metaread'  0
                                        'rest_str'   00spent Vervelen (NL 1981) 06 loc eur netherlands;entertaining unsorted;set th childrensmusic or educational
                                      'tag_artist'  Bert en Ernie
                                     'tag_release'  Bert en Ernie vervelen zich nooit...
                                       'tag_title'  Ernie Zingt Een Zacht Liedje
                                             'bpm'  132.9
                                    'search_title'  'een':3 'ernie':1 'liedje':5 'zacht':4 'zingt':2
                                   'search_artist'  'bert':1 'en':2 'ernie':3
                                  'search_release'  'bert':1 'en':2 'ernie':3 'nooit':6,7 'vervelen':4 'zich':5
                                     'search_rest'  '00spent':1 '1981':5,6 'childrensmusic':18 'educational':20 'entertaining':10,12 'eur':8 'loc':7 'netherlands':9,11 'nl':3,4 'or':19 'set':14,16 'th':17 'unsorted':13,15 'vervelen':2
                                    'search_combo'  '00spent':16 '1981':20,21 'bert':6B,9C 'childrensmusic':33 'educational':35 'een':3A 'en':7B,10C 'entertaining':25,27 'ernie':1A,8B,11C 'eur':23 'liedje':5A 'loc':22 'netherlands':24,26 'nl':18,19 'nooit':14C,15C 'or':34 'set':29,31 'th':32 'unsorted':28,30 'vervelen':12C,17 'zacht':4A 'zich':13C 'zingt':2A
                                    'tag_tracknum'  6
                                      'num_images'  1
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['comedy', 'usa', "children's songs", 'silly', 'kids']
                                        'tag_date'  1981
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621630313.676599  (2021-05-21 22:51:53)
                             'size'  3161910