======================== unified (from filesystem) ========================
                                         'bitrate'  '236.292'
                                        'duration'  '123'
                                          'artist'  'Covers Vol.3'
                                     'text_people'  ''
                                         'release'  'Covers Vol.3'
                                           'title'  'Song 2 (Blur)'
                                           'quals'  ("['Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2008'
                                        'comments'  ''
                                           'genre'  'rock-unsorted'
                                             'bpm'  '131.328'
                                             'key'  '4B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 0000260D 00002405 000070B2 00'
'COMM:iTunNORM:eng'                                 (' 0000260D 00002405 000070B2 00006922 00014670 0000B57F 00008000 00008000 '
 '0000C82E 00004B02')
'POPM:Windows Media Player 9 Series'                POPM(email='Windows Media Player 9 Series', rating=255, count=0)
'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)                     'Covers Vol.3'
'TBPM' (BPM (beats per minute))                     '131.328'
'TCON' (Content type, a.k.a. Genre)                 'rock-unsorted'
'TDRC' (Recording time)                             '2008'
'TIT2' (Title/songname/content description)         'Song 2 (Blur)'
'TKEY' (Initial key)                                '4B'
'TPE1' (Lead performer(s)/Soloist(s))               'My Chemical Romance'
'TPE2' (Band/orchestra/accompaniment)               'Covers Vol.3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.42 dB'
'TXXX:replaygain_track_peak'                        '0.361695'

========================== row from database ==========================
                                              'id'  1339026
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/my chemical romance-song 2 (blur).mp3
                                         'working'  None
                                         'bitrate'  236
                                    'duration_sec'  123
                                           'genre'  rock-unsorted
                                        'filesize'  3694281
                                           'mtime'  1620392400
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] my chemical romance song (blur) rock unsorted
                                      'tag_artist'  Covers Vol.3
                                     'tag_release'  Covers Vol.3
                                       'tag_title'  Song 2 (Blur)
                                             'bpm'  131.328
                                    'search_title'  '2':2 'blur':3,4 'song':1
                                   'search_artist'  '3':3 'covers':1 'vol':2 'vol3':4
                                  'search_release'  '3':3 'covers':1 'vol':2 'vol3':4
                                     'search_rest'  '00poprockelectronic':1 'blur':11,12 'chemical':8 'files':5,6 'loose':3,4 'my':7 'rock':13 'romance':9 'song':10 'unsorted':2
                                    'search_combo'  '00poprockelectronic':13 '2':2A '3':7B,11C 'blur':3A,4A,23,24 'chemical':20 'covers':5B,9C 'files':17,18 'loose':15,16 'my':19 'rock':25 'romance':21 'song':1A,22 'unsorted':14 'vol':6B,10C 'vol3':8B,12C
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  4B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  2008
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620392400.056181  (2021-05-07 15:00:00)
                             'size'  3694281