======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '185'
                                          'artist'  'Willie Alexander'
                                     'text_people'  ''
                                         'release'  'Willie Alexander & His Persist'
                                           'title'  'Rita Ratt'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', "
 "'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-1', "
 "'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['rock', 'alternative rock', 'blue', 'american', 'rx']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  '13'
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'set-pl-spelling;rock-unsorted'
                                             'bpm'  '91.432'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            '0'
'COMM:iTunNORM:eng'                                 (' 000003CC 00000521 0000601C 00006721 00024E34 00024E34 00006A04 00007114 '
 '0002347D 0002347D')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000A44 00000000007CAFAC 00000000 0043CE5F 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_IDs:eng'                          '13+0B7537FE6AF605CDC34693C95E211303+866923'
'TALB' (Album/Movie/Show title)                     'Willie Alexander & His Persist'
'TBPM' (BPM (beats per minute))                     '91.432'
'TCON' (Content type, a.k.a. Genre)                 ['set-pl-spelling', 'rock-unsorted']
'TENC' (Encoded by)                                 'iTunes v7.5'
'TIT2' (Title/songname/content description)         'Rita Ratt'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Willie Alexander'
'TRCK' (Track number/Position in set)               '8/13'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['rock', 'alternative rock', 'blue', 'american', 'rx']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+2.32 dB'
'TXXX:replaygain_track_peak'                        '0.551399'

========================== row from database ==========================
                                              'id'  760271
                                            'path'  /data/Music/Bulk/0playlists/0novelty themes/spelling/PoMO - Rita Ratt.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  185
                                           'genre'  set-pl-spelling;rock-unsorted
                                        'filesize'  4450960
                                           'mtime'  1620392916
                                   'redo_metaread'  0
                                        'rest_str'   0playlists 0novelty themes spelling PoMO set pl spelling;rock unsorted
                                      'tag_artist'  Willie Alexander
                                     'tag_release'  Willie Alexander & His Persist
                                       'tag_title'  Rita Ratt
                                             'bpm'  91.432
                                    'search_title'  'ratt':2 'rita':1
                                   'search_artist'  'alexander':2 'willie':1
                                  'search_release'  'alexander':2 'his':3 'persist':4 'willie':1
                                     'search_rest'  '0novelty':2 '0playlists':1 'mo':14 'pl':7 'po':13 'pomo':5 'rock':9,11 'set':6 'spelling':4,8,10 'themes':3 'unsorted':12
                                    'search_combo'  '0novelty':10 '0playlists':9 'alexander':4B,6C 'his':7C 'mo':22 'persist':8C 'pl':15 'po':21 'pomo':13 'ratt':2A 'rita':1A 'rock':17,19 'set':14 'spelling':12,16,18 'themes':11 'unsorted':20 'willie':3B,5C
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  5A
                                           '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-1', 'q-other-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['rock', 'alternative rock', 'blue', 'american', 'rx']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620392915.672849  (2021-05-07 15:08:35)
                             'size'  4450960