======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '360'
                                          'artist'  'Codec & Flexor'
                                     'text_people'  ''
                                         'release'  'Time Has Changed Remixes (Viny'
                                           'title'  'Time Has Changed (Northern Lite Remix)'
                                           'quals'  ("['Q-UNU-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-LOCALNESS-2', "
 "'q-syn-3', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-2']")
                                      'lastfmtags'  "['electro', 'electroclash', 'electronic', 'techno', 'german']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '134.0'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'COMM:iTunNORM:eng'                                 (' 00000103 000000E2 000006B8 00000650 00013897 00013897 000061CD 000064B0 '
 '0003F7E5 0003F7E5')
'PRIV:AverageLevel:¬\x11\x00\x00'                   PRIV(owner='AverageLevel', data=b'\xac\x11\x00\x00')
'PRIV:PeakValue:\x8fy\x00\x00'                      PRIV(owner='PeakValue', data=b'\x8fy\x00\x00')
'PRIV:WM/MediaClassPrimaryID:¼}`Ñ#ãâK\x86¡H¤*(D\x1e'  PRIV(owner='WM/MediaClassPrimaryID', data=b'\xbc}`\xd1#\xe3\xe2K\x86\xa1H\xa4*(D\x1e')
'PRIV:WM/MediaClassSecondaryID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/MediaClassSecondaryID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'TALB' (Album/Movie/Show title)                     'Time Has Changed Remixes (Viny'
'TBPM' (BPM (beats per minute))                     '134.0'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         'Time Has Changed (Northern Lite Remix)'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Codec & Flexor'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['electro', 'electroclash', 'electronic', 'techno', 'german']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.08 dB'
'TXXX:replaygain_track_peak'                        '0.671551'

========================== row from database ==========================
                                              'id'  768993
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Elektronikzeugs/Codec & Flexor - Time Has Changed (Northern Lite Remix).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  360
                                           'genre'  electronic-unsorted
                                        'filesize'  8651474
                                           'mtime'  1620536613
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Elektronikzeugs electronic unsorted
                                      'tag_artist'  Codec & Flexor
                                     'tag_release'  Time Has Changed Remixes (Viny
                                       'tag_title'  Time Has Changed (Northern Lite Remix)
                                             'bpm'  134.0
                                    'search_title'  'changed':3 'has':2 'lite':6 'northern':4,5 'remix':7,8 'time':1
                                   'search_artist'  'codec':1 'flexor':2
                                  'search_release'  'changed':3 'has':2 'remixes':4 'time':1 'viny':5,6
                                     'search_rest'  'electronic':2 'elektronikzeugs':1 'unsorted':3
                                    'search_combo'  'changed':3A,13C 'codec':9B 'electronic':18 'elektronikzeugs':17 'flexor':10B 'has':2A,12C 'lite':6A 'northern':4A,5A 'remix':7A,8A 'remixes':14C 'time':1A,11C 'unsorted':19 'viny':15C,16C
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-1', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['electro', 'electroclash', 'electronic', 'techno', 'german']
                                        'tag_date'  2004
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620536613.135315  (2021-05-09 07:03:33)
                             'size'  8651474