======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '358'
                                          'artist'  'Bob Dylan'
                                     'text_people'  'Bob Dylan'
                                         'release'  'Highway 61 Revisited'
                                           'title'  'Ballad Of A Thin Man'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-2', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'Q-PLAY-2', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', "
 "'q-chart-4', 'q-drums-1', 'q-other-3', 'q-vocals-4', 'q-mixbeat-1', "
 "'Q-PIANO-2']")
                                      'lastfmtags'  "['folk rock', 'rock', 'classic rock', 'folk', 'singer songwriter']"
                                     'discogstags'  "['rock', 'blues rock', 'folk rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  ''
                                            'date'  '1965'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-folk'
                                             'bpm'  '121.409'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            ' 00000642 000007C2 00001E9A'
'COMM:iTunNORM:eng'                                 (' 00000642 000007C2 00001E9A 00002A18 00035B9F 00035B9F 00004E65 00005803 '
 '000445D5 0001ADDA')
'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')
'PRIV:WM/Provider:A\x00M\x00G\x00\x00\x00'          PRIV(owner='WM/Provider', data=b'A\x00M\x00G\x00\x00\x00')
'PRIV:WM/UniqueFileIdentifier:A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x00 \x00 \x006\x004\x001\x005\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x004\x001\x004\x007\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x001\x009\x009\x002\x001\x001\x006\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x00 \x00 \x006\x004\x001\x005\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x004\x001\x004\x007\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x001\x009\x009\x002\x001\x001\x006\x00\x00\x00')
"PRIV:WM/WMCollectionGroupID:$ü[¢ô¯'F\x9e\x1fûE\x00\x85·v"  PRIV(owner='WM/WMCollectionGroupID', data=b"$\xfc[\xa2\xf4\xaf'F\x9e\x1f\xfbE\x00\x85\xb7v")
"PRIV:WM/WMCollectionID:$ü[¢ô¯'F\x9e\x1fûE\x00\x85·v"  PRIV(owner='WM/WMCollectionID', data=b"$\xfc[\xa2\xf4\xaf'F\x9e\x1f\xfbE\x00\x85\xb7v")
'PRIV:WM/WMContentID:\x98\x02VnÓ\x9eüD\x96ÁÝ.êSå\x04'  PRIV(owner='WM/WMContentID', data=b'\x98\x02Vn\xd3\x9e\xfcD\x96\xc1\xdd.\xeaS\xe5\x04')
'TALB' (Album/Movie/Show title)                     'Highway 61 Revisited'
'TBPM' (BPM (beats per minute))                     '121.409'
'TCOM' (Composer)                                   'Bob Dylan'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-folk'
'TDRC' (Recording time)                             '1965'
'TIT2' (Title/songname/content description)         'Ballad Of A Thin Man'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Bob Dylan'
'TPE2' (Band/orchestra/accompaniment)               'Bob Dylan'
'TPUB' (Publisher)                                  'Espresso'
'TRCK' (Track number/Position in set)               '5'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'blues rock', 'folk rock']
'TXXX:lastfmtags'                                   ['folk rock', 'rock', 'classic rock', 'folk', 'singer songwriter']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.49 dB'
'TXXX:replaygain_track_peak'                        '0.550131'

========================== row from database ==========================
                                              'id'  1422511
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Bob Dylan/1965 - Highway 61 Revisited/05 Ballad Of A Thin Man.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  358
                                           'genre'  ifs-songwriter-folk
                                        'filesize'  8609463
                                           'mtime'  1636400724
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 1965 05 ifs songwriter folk
                                      'tag_artist'  Bob Dylan
                                     'tag_release'  Highway 61 Revisited
                                       'tag_title'  Ballad Of A Thin Man
                                             'bpm'  121.409
                                    'search_title'  'a':3 'ballad':1 'man':5 'of':2 'thin':4
                                   'search_artist'  'bob':1 'dylan':2
                                  'search_release'  '61':2 'highway':1 'revisited':3
                                     'search_rest'  '00singer':1 '1965':4 'eos':3 'folk':6 'ifs':5 'songwriter':2
                                    'search_combo'  '00singer':11 '1965':14 '61':9C 'a':3A 'ballad':1A 'bob':6B 'dylan':7B 'eos':13 'folk':16 'highway':8C 'ifs':15 'man':5A 'of':2A 'revisited':10C 'songwriter':12 'thin':4A
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-2', 'Q-PLAY-2', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['folk rock', 'rock', 'classic rock', 'folk', 'singer songwriter']
                                        'tag_date'  1965
                                     'discogstags'  ['rock', 'blues rock', 'folk rock']

============================== file details ==============================
                                           'mtime'  1636400723.8530986  (2021-11-08 20:45:23)
                             'size'  8609463