<pre>
======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '170'
                                          'artist'  'David Lee Roth'
                                     'text_people'  ''
                                         'release'  'Skyscraper'
                                           'title'  'California Girls'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', "
 "'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-3', "
 "'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['classic rock', '80s', 'hair metal', 'hard rock', 'rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '1985'
                                        'comments'  ''
                                           'genre'  'set-pl-billboard'
                                             'bpm'  '115.854'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================<mutagen.mp3.MPEGInfo object at 0x7f9537d81bb0>

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''<br/>                                     <img style="width:150px" src="image?fid=1283941"/>
'COMM::eng'                                         ' '
'POPM:no@email'                                     POPM(email='no@email', rating=252, count=0)
'PRIV:AverageLevel:{\x13\x00\x00'                   PRIV(owner='AverageLevel', data=b'{\x13\x00\x00')
'PRIV:PeakValue:¡p\x00\x00'                         PRIV(owner='PeakValue', data=b'\xa1p\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')
'TALB' (Album/Movie/Show title)                     'Skyscraper'
'TBPM' (BPM (beats per minute))                     '115.854'
'TCON' (Content type, a.k.a. Genre)                 'set-pl-billboard'
'TDRC' (Recording time)                             '1985'
'TIT2' (Title/songname/content description)         'California Girls'
'TKEY' (Initial key)                                '1B'
'TPE1' (Lead performer(s)/Soloist(s))               'David Lee Roth'
'TPE2' (Band/orchestra/accompaniment)               'David Lee Roth'
'TRCK' (Track number/Position in set)               '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'                                   ['classic rock', '80s', 'hair metal', 'hard rock', 'rock']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.24 dB'
'TXXX:replaygain_track_peak'                        '0.741206'

========================== row from database ==========================
                                              'id'  1283941
                                            'path'  /data/Music/Bulk/00poprockelectronic/1985 complete/007 David Lee Roth - California Girls.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  170
                                           'genre'  set-pl-billboard
                                        'filesize'  7012147
                                           'mtime'  1652397856
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 1985 complete 007 set pl billboard
                                      'tag_artist'  David Lee Roth
                                     'tag_release'  Skyscraper
                                       'tag_title'  California Girls
                                             'bpm'  115.854
                                    'search_title'  'california':1 'girls':2
                                   'search_artist'  'david':1 'lee':2 'roth':3
                                  'search_release'  'skyscraper':1
                                     'search_rest'  '00poprockelectronic':1 '1985':2 'billboard':6 'complete':3 'pl':5 'set':4
                                    'search_combo'  '00poprockelectronic':7 '1985':8 'billboard':12 'california':1A 'complete':9 'david':3B 'girls':2A 'lee':4B 'pl':11 'roth':5B 'set':10 'skyscraper':6C
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  1B
                                           'quals'  ['Q-UNU-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']
                                      'lastfmtags'  ['classic rock', '80s', 'hair metal', 'hard rock', 'rock']
                                        'tag_date'  1985
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1652397856.369615  (2022-05-13 01:24:16)
                             'size'  7012147