<pre>
======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '194'
                                          'artist'  'Eddy Dyan &amp; The Saints'
                                     'text_people'  ''
                                         'release'  'Biet-Het (Vol 1)'
                                           'title'  'Eddy Dyan &amp; The Saints - Lady Sex'
                                           'quals'  ("['Q-OLDST-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-1', "
 "'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-2']")
                                     'discogstags'  "['pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  '29'
                                            'date'  '1969'
                                        'comments'  ''
                                           'genre'  'set-th-sex'
                                             'bpm'  '138.229'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================<mutagen.mp3.MPEGInfo object at 0x7f9537d814c0>

'COMM:ID3v1 Comment:XXX'                            '0'
'COMM:iTunNORM:eng'                                 (' 00000817 0000173B 000052C0 0001D31B 000138C1 000138C1 00008176 00008308 '
 '00029B3E 0000971F')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000864 000000000083130C 00000000 00474759 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_IDs:eng'                          '29+D77D78A50A54A6C0B1AC2B1C320EA93B+239088'
'TALB' (Album/Movie/Show title)                     'Biet-Het (Vol 1)'
'TBPM' (BPM (beats per minute))                     '138.229'
'TCON' (Content type, a.k.a. Genre)                 'set-th-sex'
'TDRC' (Recording time)                             '1969'
'TENC' (Encoded by)                                 'iTunes 8.0.2'
'TIT2' (Title/songname/content description)         'Eddy Dyan &amp; The Saints - Lady Sex'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Eddy Dyan &amp; The Saints'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '7/29'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'pop'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.38 dB'
'TXXX:replaygain_track_peak'                        '0.593184'

========================== row from database ==========================
                                              'id'  760126
                                            'path'  /data/Music/Bulk/0playlists/0novelty themes/sexy/Eddy Dyan & The Saints - Lady Sex.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  194
                                           'genre'  set-th-sex
                                        'filesize'  4678598
                                           'mtime'  1620343512
                                   'redo_metaread'  0
                                        'rest_str'   0playlists 0novelty themes sexy set th sex
                                      'tag_artist'  Eddy Dyan & The Saints
                                     'tag_release'  Biet-Het (Vol 1)
                                       'tag_title'  Eddy Dyan & The Saints - Lady Sex
                                             'bpm'  138.229
                                    'search_title'  'dyan':2 'eddy':1 'lady':5 'saints':4 'sex':6 'the':3
                                   'search_artist'  'dyan':2 'eddy':1 'saints':4 'the':3
                                  'search_release'  '1':6,7 'biet':1 'biethet':3 'het':2 'vol':4,5
                                     'search_rest'  '0novelty':2 '0playlists':1 'set':5 'sex':7 'sexy':4 'th':6 'themes':3
                                    'search_combo'  '0novelty':19 '0playlists':18 '1':16C,17C 'biet':11C 'biethet':13C 'dyan':2A,8B 'eddy':1A,7B 'het':12C 'lady':5A 'saints':4A,10B 'set':22 'sex':6A,24 'sexy':21 'th':23 'the':3A,9B 'themes':20 'vol':14C,15C
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1969
                                     'discogstags'  ['pop']

============================== file details ==============================
                                           'mtime'  1620343511.928391  (2021-05-07 01:25:11)
                             'size'  4678598