======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '193'
                                          'artist'  'A-TEENS'
                                     'text_people'  ''
                                         'release'  'Greatest Hits'
                                           'title'  'Floorfiller'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-UNU-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['pop', 'swedish', 'dance', 'europop', 'teen pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted'
                                             'bpm'  '122.0'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'PRIV:AverageLevel:1*\x00\x00'                      PRIV(owner='AverageLevel', data=b'1*\x00\x00')
'PRIV:PeakValue:ÿ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xff\x7f\x00\x00')
'TALB' (Album/Movie/Show title)                     'Greatest Hits'
'TBPM' (BPM (beats per minute))                     '122.0'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-unsorted'
'TDRC' (Recording time)                             '2004'
'TENC' (Encoded by)                                 'ShpurloS&s'
'TIT2' (Title/songname/content description)         'Floorfiller'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'A-TEENS'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['pop', 'swedish', 'dance', 'europop', 'teen pop']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.08 dB'
'TXXX:replaygain_track_peak'                        '0.348525'
'WXXX:'                                             WXXX(encoding=<Encoding.LATIN1: 0>, desc='', url='http://www.nowals.ru')

========================== row from database ==========================
                                              'id'  1299113
                                            'path'  /data/Music/Bulk/00poprockelectronic/Energy FM 104.2 [OLD]/A-TEENS - Floorfiller.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  193
                                           'genre'  electronic-generic or radio-unsorted
                                        'filesize'  4650898
                                           'mtime'  1621696178
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Energy FM 104.2 [OLD] electronic generic radio unsorted
                                      'tag_artist'  A-TEENS
                                     'tag_release'  Greatest Hits
                                       'tag_title'  Floorfiller
                                             'bpm'  122.0
                                    'search_title'  'floorfiller':1
                                   'search_artist'  'a':1 'ateens':3 'teens':2
                                  'search_release'  'greatest':1 'hits':2
                                     'search_rest'  '00poprockelectronic':1 '104':4 '1042':6 '2':5 'electronic':9 'energy':2 'fm':3 'generic':10 'old':7,8 'radio':11 'unsorted':12
                                    'search_combo'  '00poprockelectronic':7 '104':10 '1042':12 '2':11 'a':2B 'ateens':4B 'electronic':15 'energy':8 'floorfiller':1A 'fm':9 'generic':16 'greatest':5C 'hits':6C 'old':13,14 'radio':17 'teens':3B 'unsorted':18
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  3A
                                           '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-4', 'q-syn-2', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['pop', 'swedish', 'dance', 'europop', 'teen pop']
                                        'tag_date'  2004
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621696177.6022644  (2021-05-22 17:09:37)
                             'size'  4650898