======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '242'
                                          'artist'  'Bat For Lashes'
                                     'text_people'  'Natasha Khan'
                                         'release'  'Two Suns'
                                           'title'  'Sleep Alone'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['indie', 'alternative', 'female vocalists', 'folk', 'singer songwriter']"
                                     'discogstags'  "['rock', 'pop', 'indie rock', 'indie pop', 'art rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '11'
                                            'date'  '2009'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '100.8'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 000005CD 000006A1 00003AEB 00004E8A 00028E14 0002B305 00008B11 00008BE3 '
 '0001AA6D 0000C1C6')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 000007F8 0000000000A37478 00000000 00942A9D 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_IDs:eng'                          '11+EEE79EA1E302C9958B68B53DDAED9C92+12381653'
'TALB' (Album/Movie/Show title)                     'Two Suns'
'TBPM' (BPM (beats per minute))                     '100.8'
'TCOM' (Composer)                                   'Natasha Khan'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '2009'
'TENC' (Encoded by)                                 'iTunes v7.5'
'TIT2' (Title/songname/content description)         'Sleep Alone'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Bat For Lashes'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '2/11'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'pop', 'indie rock', 'indie pop', 'art rock']
'TXXX:lastfmtags'                                   ['indie', 'alternative', 'female vocalists', 'folk', 'singer songwriter']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.98 dB'
'TXXX:replaygain_track_peak'                        '0.552937'

========================== row from database ==========================
                                              'id'  1239242
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Bat for Lashes/Two Suns/02 sleep alone.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  242
                                           'genre'  ifs-songwriter
                                        'filesize'  9780594
                                           'mtime'  1636401781
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos for 02 sleep alone ifs songwriter
                                      'tag_artist'  Bat For Lashes
                                     'tag_release'  Two Suns
                                       'tag_title'  Sleep Alone
                                             'bpm'  100.8
                                    'search_title'  'alone':2 'sleep':1
                                   'search_artist'  'bat':1 'for':2 'lashes':3
                                  'search_release'  'suns':2 'two':1
                                     'search_rest'  '00singer':1 'alone':6 'eos':3 'for':4 'ifs':7 'sleep':5 'songwriter':2
                                    'search_combo'  '00singer':8 'alone':2A,13 'bat':3B 'eos':10 'for':4B,11 'ifs':14 'lashes':5B 'sleep':1A,12 'songwriter':9 'suns':7C 'two':6C
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-1', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'alternative', 'female vocalists', 'folk', 'singer songwriter']
                                        'tag_date'  2009
                                     'discogstags'  ['rock', 'pop', 'indie rock', 'indie pop', 'art rock']

============================== file details ==============================
                                           'mtime'  1636401780.5089202  (2021-11-08 21:03:00)
                             'size'  9780594