======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '502'
                                          'artist'  'The Tumbled Sea'
                                     'text_people'  ''
                                         'release'  'Melody/Summer'
                                           'title'  'Summer II'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-3', 'Q-PLAY-3', 'q-bass-2', 'q-busy-2', 'q-grit-1', "
 "'Q-PIANO-2', 'q-chart-2', 'q-drums-1', 'q-other-4', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['instrumental', 'neoclassical', 'piano', 'lo fi', 'ambient']"
                                     'discogstags'  "['modern classical', 'electronic', 'ambient']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '2009'
                                        'comments'  ''
                                           'genre'  'electronic-ambient'
                                             'bpm'  '141.512'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'PRIV:AverageLevel:{\x08\x00\x00'                   PRIV(owner='AverageLevel', data=b'{\x08\x00\x00')
'PRIV:PeakValue:!s\x00\x00'                         PRIV(owner='PeakValue', data=b'!s\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)                     'Melody/Summer'
'TBPM' (BPM (beats per minute))                     '141.512'
'TCON' (Content type, a.k.a. Genre)                 'electronic-ambient'
'TDRC' (Recording time)                             '2009'
'TIT2' (Title/songname/content description)         'Summer II'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Tumbled Sea'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['modern classical', 'electronic', 'ambient']
'TXXX:lastfmtags'                                   ['instrumental', 'neoclassical', 'piano', 'lo fi', 'ambient']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.17 dB'
'TXXX:replaygain_track_peak'                        '0.636536'

========================== row from database ==========================
                                              'id'  1348079
                                            'path'  /data/Music/Bulk/00poprockelectronic/00ambient/The Tumbled Sea/Melody Summer/01 summer ii.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  502
                                           'genre'  electronic-ambient
                                        'filesize'  8044426
                                           'mtime'  1636910851
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 00ambient 01 summer ii electronic ambient
                                      'tag_artist'  The Tumbled Sea
                                     'tag_release'  Melody/Summer
                                       'tag_title'  Summer II
                                             'bpm'  141.512
                                    'search_title'  'ii':2 'summer':1
                                   'search_artist'  'sea':3 'the':1 'tumbled':2
                                  'search_release'  'melody':1 'melodysummer':3 'summer':2
                                     'search_rest'  '00ambient':2 '00poprockelectronic':1 'ambient':6 'electronic':5 'ii':4 'summer':3
                                    'search_combo'  '00ambient':10 '00poprockelectronic':9 'ambient':14 'electronic':13 'ii':2A,12 'melody':6C 'melodysummer':8C 'sea':5B 'summer':1A,7C,11 'the':3B 'tumbled':4B
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-2', 'Q-PIANO-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-3', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['instrumental', 'neoclassical', 'piano', 'lo fi', 'ambient']
                                        'tag_date'  2009
                                     'discogstags'  ['modern classical', 'electronic', 'ambient']

============================== file details ==============================
                                           'mtime'  1636910850.7362301  (2021-11-14 18:27:30)
                             'size'  8044426