======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '290'
                                          'artist'  'Nine Inch Nails'
                                     'text_people'  'Bernard Sumner/Ian Curtis/Peter Hook/Stephen Morris'
                                         'release'  "You Can't Judge a Song By Its Cover"
                                           'title'  'Dead Souls'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-4', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['rock', 'industrial', 'electronic', 'alternative', 'industrial rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'set-cover or covered-styled;set-cover or covered'
                                             'bpm'  '134.466'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'POPM:no@email'                                     POPM(email='no@email', rating=186, count=0)
'PRIV:AverageLevel:i\x19\x00\x00'                   PRIV(owner='AverageLevel', data=b'i\x19\x00\x00')
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'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')
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"PRIV:WM/WMCollectionID:\x0f\x08ÓÏ2þ'E¿i\x1eM2\x94¢\x9e"  PRIV(owner='WM/WMCollectionID', data=b"\x0f\x08\xd3\xcf2\xfe'E\xbfi\x1eM2\x94\xa2\x9e")
'PRIV:WM/WMContentID:R͸\xa0_ÏýN\x8e\x8f§\x05ï\x1bå~'  PRIV(owner='WM/WMContentID', data=b'R\xcd\xb8\xa0_\xcf\xfdN\x8e\x8f\xa7\x05\xef\x1b\xe5~')
'PRIV:ZuneAlbumArtistMediaID:\x8c\x08Wc\x8cwÜ\x11\x94\x03\x00\x19¹²\x08h'  PRIV(owner='ZuneAlbumArtistMediaID', data=b'\x8c\x08Wc\x8cw\xdc\x11\x94\x03\x00\x19\xb9\xb2\x08h')
'PRIV:ZuneAlbumMediaID:\x00\x03\x07\x99\x00\x04Û\x11\x89Ê\x00\x19¹*93'  PRIV(owner='ZuneAlbumMediaID', data=b'\x00\x03\x07\x99\x00\x04\xdb\x11\x89\xca\x00\x19\xb9*93')
'PRIV:ZuneCollectionID:¨X\x0b\x1a\x8b\x82\x0c@£ã\x1dÁzÕHý'  PRIV(owner='ZuneCollectionID', data=b'\xa8X\x0b\x1a\x8b\x82\x0c@\xa3\xe3\x1d\xc1z\xd5H\xfd')
'PRIV:ZuneMediaID:\x00$°\x9f\x00\x05Û\x11\x89Ê\x00\x19¹*93'  PRIV(owner='ZuneMediaID', data=b'\x00$\xb0\x9f\x00\x05\xdb\x11\x89\xca\x00\x19\xb9*93')
'TALB' (Album/Movie/Show title)                     "You Can't Judge a Song By Its Cover"
'TBPM' (BPM (beats per minute))                     '134.466'
'TCOM' (Composer)                                   'Bernard Sumner/Ian Curtis/Peter Hook/Stephen Morris'
'TCON' (Content type, a.k.a. Genre)                 ['set-cover or covered-styled', 'set-cover or covered']
'TIT2' (Title/songname/content description)         'Dead Souls'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Nine Inch Nails'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '/1'
'TPUB' (Publisher)                                  'Castle'
'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:lastfmtags'                                   ['rock', 'industrial', 'electronic', 'alternative', 'industrial rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.73 dB'
'TXXX:replaygain_track_peak'                        '0.459664'

========================== row from database ==========================
                                              'id'  1527479
                                            'path'  /data/Music/Bulk/00poprockelectronic/you can_t judge a song by its cover/-00-Nine Inch Nails-Dead Souls.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  290
                                           'genre'  set-cover or covered-styled;set-cover or covered
                                        'filesize'  5808000
                                           'mtime'  1620665597
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic you can_t judge song by its cover 00 set cover or covered styled;set cover or covered
                                      'tag_artist'  Nine Inch Nails
                                     'tag_release'  You Can't Judge a Song By Its Cover
                                       'tag_title'  Dead Souls
                                             'bpm'  134.466
                                    'search_title'  'dead':1 'souls':2
                                   'search_artist'  'inch':2 'nails':3 'nine':1
                                  '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':13 'its':8 'judge':5 'or':12 'set':11,15,17 'song':6 'styled':14,16 't':4 'you':2
                                    'search_combo'  '00':25 '00poprockelectronic':16 'a':11C 'by':13C,22 'can':7C,18 'cant':9C 'cover':15C,24 'covered':28 'dead':1A 'inch':4B 'its':14C,23 'judge':10C,20 'nails':5B 'nine':3B 'or':27 'set':26,30,32 'song':12C,21 'souls':2A 'styled':29,31 't':8C,19 'you':6C,17
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-2', 'q-chart-4', 'q-other-3', 'Q-HAP-2', 'q-bass-3', 'q-grit-4']
                                      'lastfmtags'  ['rock', 'industrial', 'electronic', 'alternative', 'industrial rock']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620665596.7876494  (2021-05-10 18:53:16)
                             'size'  5808000