======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '86'
                                          'artist'  "Guns N' Roses"
                                     'text_people'  'Glenn Danzig'
                                         'release'  "You Can't Judge a Song By Its Cover"
                                           'title'  'Attitude'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['classic rock', '80s', 'hard rock', 'metal', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1993'
                                        'comments'  ''
                                           'genre'  'set-cover or covered-styled;set-cover or covered'
                                             'bpm'  '125.470'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

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'PRIV:AverageLevel:{/\x00\x00'                      PRIV(owner='AverageLevel', data=b'{/\x00\x00')
'PRIV:PeakValue:¡\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xa1\x7f\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')
'PRIV:WM/Provider:A\x00M\x00G\x00\x00\x00'          PRIV(owner='WM/Provider', data=b'A\x00M\x00G\x00\x00\x00')
'PRIV:WM/UniqueFileIdentifier:A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x001\x008\x008\x004\x005\x000\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x004\x004\x001\x006\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x001\x000\x000\x009\x006\x004\x009\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x001\x008\x008\x004\x005\x000\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x004\x004\x001\x006\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x001\x000\x000\x009\x006\x004\x009\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:\x89¦Ìò\x05y¥A¬\x1aÞs}\x9dT"'  PRIV(owner='WM/WMCollectionGroupID', data=b'\x89\xa6\xcc\xf2\x05y\xa5A\xac\x1a\xdes}\x9dT"')
'PRIV:WM/WMCollectionID:\x89¦Ìò\x05y¥A¬\x1aÞs}\x9dT"'  PRIV(owner='WM/WMCollectionID', data=b'\x89\xa6\xcc\xf2\x05y\xa5A\xac\x1a\xdes}\x9dT"')
'PRIV:WM/WMContentID:}\x8eÙ\x0b\x07o¤K¿_|Ü«\x05\x14&'  PRIV(owner='WM/WMContentID', data=b'}\x8e\xd9\x0b\x07o\xa4K\xbf_|\xdc\xab\x05\x14&')
'TALB' (Album/Movie/Show title)                     "You Can't Judge a Song By Its Cover"
'TBPM' (BPM (beats per minute))                     '125.470'
'TCOM' (Composer)                                   'Glenn Danzig'
'TCON' (Content type, a.k.a. Genre)                 ['set-cover or covered-styled', 'set-cover or covered']
'TIT2' (Title/songname/content description)         'Attitude'
'TKEY' (Initial key)                                '1A'
'TLEN' (Length)                                     '87040'
'TPE1' (Lead performer(s)/Soloist(s))               "Guns N' Roses"
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Geffen'
'TXXX:DATE'                                         '1993'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['classic rock', '80s', 'hard rock', 'metal', 'rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.35 dB'
'TXXX:replaygain_track_peak'                        '0.348833'

========================== row from database ==========================
                                              'id'  1532912
                                            'path'  /data/Music/Bulk/00poprockelectronic/you can_t judge a song by its cover/-00-Guns N_ Roses-Attitude.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  86
                                           'genre'  set-cover or covered-styled;set-cover or covered
                                        'filesize'  3481472
                                           'mtime'  1638540246
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic you can_t judge song by its cover 00 N_ set cover or covered styled;set cover or covered
                                      'tag_artist'  Guns N' Roses
                                     'tag_release'  You Can't Judge a Song By Its Cover
                                       'tag_title'  Attitude
                                             'bpm'  125.47
                                    'search_title'  'attitude':1
                                   'search_artist'  'guns':1 'n':2,3 'roses':4
                                  'search_release'  'a':6 'by':8 'can':2 'cant':4 'cover':10 'its':9 'judge':5 'song':7 't':3 'you':1
                                     'search_rest'  '00':10 '00poprockelectronic':1 'by':7 'can':3 'cover':9 'covered':14 'its':8 'judge':5 'n':11 'or':13 'set':12,16,18 'song':6 'styled':15,17 't':4 'you':2
                                    'search_combo'  '00':25 '00poprockelectronic':16 'a':11C 'attitude':1A 'by':13C,22 'can':7C,18 'cant':9C 'cover':15C,24 'covered':29 'guns':2B 'its':14C,23 'judge':10C,20 'n':3B,4B,26 'or':28 'roses':5B 'set':27,31,33 'song':12C,21 'styled':30,32 't':8C,19 'you':6C,17
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['classic rock', '80s', 'hard rock', 'metal', 'rock']
                                        'tag_date'  1993
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1638540246.2091525  (2021-12-03 15:04:06)
                             'size'  3481472