<pre>
======================== unified (from filesystem) ========================
                                         'bitrate'  '243.433'
                                        'duration'  '225'
                                          'artist'  'Volbeat'
                                     'text_people'  ''
                                         'release'  'Rock The Rebel/Metal The Devil'
                                           'title'  'Boa (jdm)'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-4', 'q-play-3', "
 "'q-chart-3', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['danish', 'metal', 'elvis metal', 'rockabilly', 'heavy metal']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  ''
                                            'date'  '2007'
                                        'comments'  ''
                                           'genre'  'eid-metal-heavy'
                                             'bpm'  '144.130'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================<mutagen.mp3.MPEGInfo object at 0x7f9537d75dc0>

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''<br/>                                     <img style="width:150px" src="image?fid=1401166"/>
'COMM:ID3v1 Comment:XXX'                            ' 00001563 00000000 000039DC'
'COMM:iTunNORM:eng'                                 (' 00001563 00000000 000039DC 00000000 0001CEFC 00000000 00008000 00000000 '
 '0001FB65 00000000')
'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)                     'Rock The Rebel/Metal The Devil'
'TBPM' (BPM (beats per minute))                     '144.130'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-heavy'
'TDRC' (Recording time)                             '2007'
'TIT2' (Title/songname/content description)         'Boa (jdm)'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Volbeat'
'TRCK' (Track number/Position in set)               '11'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['danish', 'metal', 'elvis metal', 'rockabilly', 'heavy metal']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-2.47 dB'
'TXXX:replaygain_track_peak'                        '0.423767'

========================== row from database ==========================
                                              'id'  1401166
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Volbeat/[2007] Rock The Rebel Metal The Devil/11 Boa (jdm).mp3
                                         'working'  None
                                         'bitrate'  243
                                    'duration_sec'  225
                                           'genre'  eid-metal-heavy
                                        'filesize'  6919320
                                           'mtime'  1620311071
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal [2007] 11 eid metal heavy
                                      'tag_artist'  Volbeat
                                     'tag_release'  Rock The Rebel/Metal The Devil
                                       'tag_title'  Boa (jdm)
                                             'bpm'  144.13
                                    'search_title'  'boa':1 'jdm':2,3
                                   'search_artist'  'volbeat':1
                                  'search_release'  'devil':6 'metal':4 'rebel':3 'rebelmetal':5 'rock':1 'the':2
                                     'search_rest'  '00dwimp':1 '00metal':2 '2007':3,4 'eid':5 'heavy':7 'metal':6
                                    'search_combo'  '00dwimp':11 '00metal':12 '2007':13,14 'boa':1A 'devil':10C 'eid':15 'heavy':17 'jdm':2A,3A 'metal':8C,16 'rebel':7C 'rebelmetal':9C 'rock':5C 'the':6C 'volbeat':4B
                                    'tag_tracknum'  11
                                      'num_images'  1
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-3', 'q-other-4', 'Q-HAP-1', 'q-bass-3', 'q-grit-4']
                                      'lastfmtags'  ['danish', 'metal', 'elvis metal', 'rockabilly', 'heavy metal']
                                        'tag_date'  2007
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620311070.9080698  (2021-05-06 16:24:30)
                             'size'  6919320