======================== unified (from filesystem) ========================
                                         'bitrate'  '224.0'
                                        'duration'  '267'
                                          'artist'  'Uriah Heep'
                                     'text_people'  ''
                                         'release'  'progsoup 53'
                                           'title'  'Rainbow Demon'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rock', 'hard rock', 'progressive rock', '70s', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '30'
                                      'tracktotal'  '9'
                                            'date'  '1972'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive'
                                             'bpm'  '116.053'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            '0'
'COMM:iTunNORM:eng'                                 (' 000010FB 00001717 00009626 00009C2C 0002E25E 0002E25E 000082D9 00008351 '
 '00000414 00000414')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000AB0 0000000000B42940 00000000 00725492 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_IDs:eng'                          '9+39F1F073560B6E5392837A496931C77D+4211939'
'TALB' (Album/Movie/Show title)                     'progsoup 53'
'TBPM' (BPM (beats per minute))                     '116.053'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-progressive'
'TDRC' (Recording time)                             '1972'
'TENC' (Encoded by)                                 'iTunes 9.1.1.12'
'TIT2' (Title/songname/content description)         'Rainbow Demon'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Uriah Heep'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '30/9'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['rock', 'hard rock', 'progressive rock', '70s', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.04 dB'
'TXXX:replaygain_track_peak'                        '0.364588'

========================== row from database ==========================
                                              'id'  1415781
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/PROGSOUP/progsoup 53/3018 uriah heep - rainbow demon.mp3
                                         'working'  None
                                         'bitrate'  224
                                    'duration_sec'  267
                                           'genre'  rock-cppex-progressive
                                        'filesize'  7500818
                                           'mtime'  1620737569
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy PROGSOUP 3018 uriah heep rainbow demon rock cppex progressive
                                      'tag_artist'  Uriah Heep
                                     'tag_release'  progsoup 53
                                       'tag_title'  Rainbow Demon
                                             'bpm'  116.053
                                    'search_title'  'demon':2 'rainbow':1
                                   'search_artist'  'heep':2 'uriah':1
                                  'search_release'  '53':2 'progsoup':1
                                     'search_rest'  '3018':3 'classicprogpsy':1 'cppex':9 'demon':7 'heep':5 'progressive':10 'progsoup':2 'rainbow':6 'rock':8 'uriah':4
                                    'search_combo'  '3018':9 '53':6C 'classicprogpsy':7 'cppex':15 'demon':2A,13 'heep':4B,11 'progressive':16 'progsoup':5C,8 'rainbow':1A,12 'rock':14 'uriah':3B,10
                                    'tag_tracknum'  30
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['rock', 'hard rock', 'progressive rock', '70s', 'classic rock']
                                        'tag_date'  1972
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620737568.5351145  (2021-05-11 14:52:48)
                             'size'  7500818