======================== unified (from filesystem) ========================
                                         'bitrate'  '127.697'
                                        'duration'  '370'
                                          'artist'  'Zombie Nation'
                                     'text_people'  ''
                                         'release'  'Kernkraft 400'
                                           'title'  'Kernkraft 400 (DJ Gius remix)'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['electronica', 'trance', 'techno', 'electronic', 'electro']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '3'
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'electronic-th-techno'
                                             'bpm'  '140.141'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '[dj gius rmx]'
'COMM:ID3v1 Comment:XXX'                            '[dj gius rmx]'
'POPM:Windows Media Player 9 Series'                POPM(email='Windows Media Player 9 Series', rating=196, count=0)
'TALB' (Album/Movie/Show title)                     'Kernkraft 400'
'TBPM' (BPM (beats per minute))                     '140.141'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno'
'TDRC' (Recording time)                             '1999-11-08'
'TIT2' (Title/songname/content description)         'Kernkraft 400 (DJ Gius remix)'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Zombie Nation'
'TPE2' (Band/orchestra/accompaniment)               'Zombie Nation'
'TPUB' (Publisher)                                  "What's Up ?!"
'TRCK' (Track number/Position in set)               '2/3'
'TSOP' (Performer sort order)                       'Zombie Nation'
'TXXX:ALBUMARTISTSORT'                              'Zombie Nation'
'TXXX:BARCODE'                                      '731456142821'
'TXXX:CATALOGNUMBER'                                '561 428-2'
'TXXX:MusicBrainz Album Artist Id'                  'e26fa4b0-ea73-4a33-a745-44077a0d5a59'
'TXXX:MusicBrainz Album Id'                         '3626a8f1-e981-43f0-99e5-3d7e50362b5c'
'TXXX:MusicBrainz Album Release Country'            'DE'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'single'
'TXXX:MusicBrainz Artist Id'                        'e26fa4b0-ea73-4a33-a745-44077a0d5a59'
'TXXX:MusicIP PUID'                                 '91ace141-3090-7643-c79f-10e6164516ef'
'TXXX:MusicMagic Data'                              'AgEAAcHZko2PuMxjgpwr915jvUKE2YDpuX+Zo3HI8srVQKSTgAGylbIP3277DdrCiA2AAdvTg7EMex2tgG/wCP+vE6afRtBBs5by672Fw+3Vy8VYDJ0n5+y3umWzgt91vzMwmOn19aqa2pop4arS/Ouf92vj+cVfgun0JrJZ/FkDTZTS9Mjz5QTW0nPictObnnA='
'TXXX:MusicMagic Fingerprint'                       'ATpdVEFGoRCoFaMF3gRRBI8CcASQAaAB6gHTATwCYAEuAWsBFQGKAewBogGRATMA5gDeAMgA8QDnAN8ApwCcAJUAtwCfAIAAfgB8AJgAqACt2AbAGWCqAWUixwH3AVcEYABVCLcAfgHZAHoAnwQ9AMsA3v/6AngCPAILAcYA2QCqAGQAUgAvAEAACwAS//QAF//e//oAIAAoAD0APQCaAIJpVb18/jTmEAVc+Pv7Wv2s/T4Cuv6E/sf91v8dATv+/f8N/mYAjAAE/4z/PP6r/wv+sf7Q/g/+Av3C/l3+RP5L/d3+Jv6j/qD+oP43/jr+IvZzECwlDbHjw+zih+f1503zvN/O9k3zBfRA+Bzu/Pm29kz5t/IJ8VLyhvaV+jT7zP0J/WD9ef1x/bD+Yv7q/sT/Df8H/w//TP81/3b/5P//DNzqGhUqULS5IxO5Bt30Fggc0zEG2PmnBi0CUepXA1j8CwIb87vw7voK+o7+9P+3/7v/vf9N/z7/TP73/tr+aP4X/on+7f7f/ur+Zf4p/cv9yAM/8jIKR0ctAYP8Mu9g+BnQ7fad51j1nvmY1rP5lO2m97/iUthC5/nqQ/JE9jP00vcl8qHzM/IT9Tv11vTH8y/1Rvhx+Q75k/ig+bP6HQPM/A37OvmkFicIaP6z8Yj8O92S+pr4vgEm/pTpvwAlAnwLhPKy+on/OQY2EJAQORvlFY0kpCSiKBgePBzVHh8kxh7IFS8UPRJdFgER3xIRGRcQDQ=='
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:added_timestamp'                              '128930990202923527'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['electronica', 'trance', 'techno', 'electronic', 'electro']
'TXXX:q-bass'                                       '4'
'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'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.17 dB'
'TXXX:replaygain_track_peak'                        '0.409366'

========================== row from database ==========================
                                              'id'  1327391
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/zombie nation - kernkraft 400.mp3
                                         'working'  None
                                         'bitrate'  127
                                    'duration_sec'  370
                                           'genre'  electronic-th-techno
                                        'filesize'  5925838
                                           'mtime'  1620573234
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] zombie nation kernkraft electronic th techno
                                      'tag_artist'  Zombie Nation
                                     'tag_release'  Kernkraft 400
                                       'tag_title'  Kernkraft 400 (DJ Gius remix)
                                             'bpm'  140.141
                                    'search_title'  '400':2 'dj':3,4 'gius':5 'kernkraft':1 'remix':6,7
                                   'search_artist'  'nation':2 'zombie':1
                                  'search_release'  '400':2 'kernkraft':1
                                     'search_rest'  '00poprockelectronic':1 'electronic':10 'files':5,6 'kernkraft':9 'loose':3,4 'nation':8 'techno':12 'th':11 'unsorted':2 'zombie':7
                                    'search_combo'  '00poprockelectronic':12 '400':2A,11C 'dj':3A,4A 'electronic':21 'files':16,17 'gius':5A 'kernkraft':1A,10C,20 'loose':14,15 'nation':9B,19 'remix':6A,7A 'techno':23 'th':22 'unsorted':13 'zombie':8B,18
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', '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-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'trance', 'techno', 'electronic', 'electro']
                                        'tag_date'  1999
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620573234.0616426  (2021-05-09 17:13:54)
                             'size'  5925838