======================== unified (from filesystem) ========================
                                         'bitrate'  '255.348'
                                        'duration'  '178'
                                          'artist'  'Gnarls Barkley'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Crazy'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-HHRNBTT-2', 'Q-JZFKS-3', 'Q-OLDST-3', 'Q-UNU-1', "
 "'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', "
 "'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-3']")
                                      'lastfmtags'  "['alternative', 'soul', 'funk', 'hip hop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '112.010'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'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')
'TBPM' (BPM (beats per minute))                     '112.010'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TIT2' (Title/songname/content description)         'Crazy'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Gnarls Barkley'
'TRCK' (Track number/Position in set)               '11'
'TSSE' (Software/Hardware and settings used for encoding)  'LAME v3.97 (beta)'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['alternative', 'soul', 'funk', 'hip hop']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.28 dB'
'TXXX:replaygain_track_peak'                        '0.321535'

========================== row from database ==========================
                                              'id'  1315221
                                            'path'  /data/Music/Bulk/00poprockelectronic/set/011 gnarls barkley - crazy.mp3
                                         'working'  None
                                         'bitrate'  255
                                    'duration_sec'  178
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  5700339
                                           'mtime'  1620573835
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic set 011 gnarls barkley crazy electronic generic or radio dance
                                      'tag_artist'  Gnarls Barkley
                                     'tag_release'  None
                                       'tag_title'  Crazy
                                             'bpm'  112.01
                                    'search_title'  'crazy':1
                                   'search_artist'  'barkley':2 'gnarls':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'barkley':4 'crazy':5 'dance':10 'electronic':6 'generic':7 'gnarls':3 'or':8 'radio':9 'set':2
                                    'search_combo'  '00poprockelectronic':4 'barkley':3B,7 'crazy':1A,8 'dance':13 'electronic':9 'generic':10 'gnarls':2B,6 'or':11 'radio':12 'set':5
                                    'tag_tracknum'  11
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-3', 'q-other-1', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['alternative', 'soul', 'funk', 'hip hop']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620573835.38456  (2021-05-09 17:23:55)
                             'size'  5700339