======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '395'
                                          'artist'  'Michael Gray'
                                     'text_people'  ''
                                         'release'  'Eye Industries'
                                           'title'  'Somewhere Beyond'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', "
 "'Q-UNU-1', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['dance', 'house', 'club', 'electronic', 'electronica']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '127.0'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

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'PRIV:WM/UniqueFileIdentifier:;\x00\x00\x00'        PRIV(owner='WM/UniqueFileIdentifier', data=b';\x00\x00\x00')
"PRIV:WM/WMCollectionGroupID:'\x02\x057×f»G\x84ÕXý¹ºÎK"  PRIV(owner='WM/WMCollectionGroupID', data=b"'\x02\x057\xd7f\xbbG\x84\xd5X\xfd\xb9\xba\xceK")
"PRIV:WM/WMCollectionID:'\x02\x057×f»G\x84ÕXý¹ºÎK"  PRIV(owner='WM/WMCollectionID', data=b"'\x02\x057\xd7f\xbbG\x84\xd5X\xfd\xb9\xba\xceK")
'PRIV:WM/WMContentID:ß\x05¤sfíóM\x8e®¡öÉ\x0fâ:'     PRIV(owner='WM/WMContentID', data=b'\xdf\x05\xa4sf\xed\xf3M\x8e\xae\xa1\xf6\xc9\x0f\xe2:')
'TALB' (Album/Movie/Show title)                     'Eye Industries'
'TBPM' (BPM (beats per minute))                     '127.0'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TDRC' (Recording time)                             '2006'
'TIT2' (Title/songname/content description)         'Somewhere Beyond'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Michael Gray'
'TPE2' (Band/orchestra/accompaniment)               'Michael Gray'
'TPUB' (Publisher)                                  'ａｖｅｘ\u3000ｔｒａｘ'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['dance', 'house', 'club', 'electronic', 'electronica']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.55 dB'
'TXXX:replaygain_track_peak'                        '0.487317'

========================== row from database ==========================
                                              'id'  1307618
                                            'path'  /data/Music/Bulk/00poprockelectronic/set/@@Michael Gray - Somewhere Beyond.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  395
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  15802368
                                           'mtime'  1621696883
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic set @@Michael electronic generic or radio dance
                                      'tag_artist'  Michael Gray
                                     'tag_release'  Eye Industries
                                       'tag_title'  Somewhere Beyond
                                             'bpm'  127.0
                                    'search_title'  'beyond':2 'somewhere':1
                                   'search_artist'  'gray':2 'michael':1
                                  'search_release'  'eye':1 'industries':2
                                     'search_rest'  '00poprockelectronic':1 'dance':8 'electronic':4 'generic':5 'michael':3 'or':6 'radio':7 'set':2
                                    'search_combo'  '00poprockelectronic':7 'beyond':2A 'dance':14 'electronic':10 'eye':5C 'generic':11 'gray':4B 'industries':6C 'michael':3B,9 'or':12 'radio':13 'set':8 'somewhere':1A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'house', 'club', 'electronic', 'electronica']
                                        'tag_date'  2006
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1621696883.2823784  (2021-05-22 17:21:23)
                             'size'  15802368