======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '186'
                                          'artist'  'The Carpenters'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'All Of My Life'
                                           'quals'  ("['Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-2', "
 "'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', "
 "'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                                      'lastfmtags'  "['70s', 'pop', 'easy listening', 'female vocalists', 'oldies']"
                                     'discogstags'  "['pop', 'vocal']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1975'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-squeaky'
                                             'bpm'  '135.004'
                                             'key'  '11B'
                                        'acoustid'  ''
rest: ''

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

'PRIV:AverageLevel:F\x0c\x00\x00'                   PRIV(owner='AverageLevel', data=b'F\x0c\x00\x00')
'PRIV:PeakValue:£K\x00\x00'                         PRIV(owner='PeakValue', data=b'\xa3K\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')
'TBPM' (BPM (beats per minute))                     '135.004'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-squeaky'
'TDRC' (Recording time)                             '1975'
'TIT2' (Title/songname/content description)         'All Of My Life'
'TKEY' (Initial key)                                '11B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Carpenters'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['pop', 'vocal']
'TXXX:lastfmtags'                                   ['70s', 'pop', 'easy listening', 'female vocalists', 'oldies']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.09 dB'
'TXXX:replaygain_track_peak'                        '0.496923'

========================== row from database ==========================
                                              'id'  1289129
                                            'path'  /data/Music/Bulk/00poprockelectronic/Carpenters/Carpenters - All Of My Life.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  186
                                           'genre'  electronic-generic or radio-squeaky
                                        'filesize'  2982248
                                           'mtime'  1620568249
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic electronic generic or radio squeaky
                                      'tag_artist'  The Carpenters
                                     'tag_release'  None
                                       'tag_title'  All Of My Life
                                             'bpm'  135.004
                                    'search_title'  'all':1 'life':4 'my':3 'of':2
                                   'search_artist'  'carpenters':2 'the':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'electronic':2 'generic':3 'or':4 'radio':5 'squeaky':6
                                    'search_combo'  '00poprockelectronic':7 'all':1A 'carpenters':6B 'electronic':8 'generic':9 'life':4A 'my':3A 'of':2A 'or':10 'radio':11 'squeaky':12 'the':5B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  11B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-3', 'q-other-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['70s', 'pop', 'easy listening', 'female vocalists', 'oldies']
                                        'tag_date'  1975
                                     'discogstags'  ['pop', 'vocal']

============================== file details ==============================
                                           'mtime'  1620568248.695183  (2021-05-09 15:50:48)
                             'size'  2982248