======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '435'
                                          'artist'  'Punk Floyd'
                                     'text_people'  ''
                                         'release'  'Punk Floyd Have Landed'
                                           'title'  'Acid House is Here to Stay'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'Q-GRIT-2', 'q-bass-1', 'q-drums-4', 'q-other-1', 'q-piano-1', "
 "'q-vocals-1', 'Q-SYN-4', 'Q-BUSY-3', 'Q-PLAY-2', 'Q-CHART-1', 'Q-MIXBEAT-4']")
                                      'lastfmtags'  "['acid techno', 'techno', 'acid']"
                                     'discogstags'  "['techno', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  '12'
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-th-techno-acid'
                                             'bpm'  '132.6'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'COMM:iTunNORM:eng'                                 (' 00000226 00000203 00001A71 000018CA 0004651A 0004651A 00007FFD 00007BEA '
 '000533D6 000533D6')
'COMM:iTunes_CDDB_IDs:eng'                          '12+3E903F271F54881856828841F559F737+241877'
'TALB' (Album/Movie/Show title)                     'Punk Floyd Have Landed'
'TBPM' (BPM (beats per minute))                     '132.6'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno-acid'
'TENC' (Encoded by)                                 'iTunes v4.7.0.42'
'TIT2' (Title/songname/content description)         'Acid House is Here to Stay'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Punk Floyd'
'TRCK' (Track number/Position in set)               '8/12'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '1'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '4'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-SYN'                                        '4'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['techno', 'electronic']
'TXXX:lastfmtags'                                   ['acid techno', 'techno', 'acid']
'TXXX:q-bass'                                       '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.20 dB'
'TXXX:replaygain_track_peak'                        '0.820149'

========================== row from database ==========================
                                              'id'  1484331
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/Punk Floyd_-_Punk Floyd Have Landed/08 acid house is here to stay.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  435
                                           'genre'  electronic-th-techno-acid
                                        'filesize'  10453890
                                           'mtime'  1620586529
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy Floyd_ _Punk 08 acid house here stay electronic th techno acid
                                      'tag_artist'  Punk Floyd
                                     'tag_release'  Punk Floyd Have Landed
                                       'tag_title'  Acid House is Here to Stay
                                             'bpm'  132.6
                                    'search_title'  'acid':1 'here':4 'house':2 'is':3 'stay':6 'to':5
                                   'search_artist'  'floyd':2 'punk':1
                                  'search_release'  'floyd':2 'have':3 'landed':4 'punk':1
                                     'search_rest'  'acid':4 'classicprogpsy':1 'electronic':8 'floyd':2 'here':6 'house':5 'punk':3 'stay':7 'techno':10 'th':9
                                    'search_combo'  'acid':1A,16 'classicprogpsy':13 'electronic':20 'floyd':8B,10C,14 'have':11C 'here':4A,18 'house':2A,17 'is':3A 'landed':12C 'punk':7B,9C,15 'stay':6A,19 'techno':22 'th':21 'to':5A
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-4', 'Q-OLDST-3', 'Q-GRIT-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-1', 'q-drums-4', 'Q-SYN-4', 'q-other-1', 'Q-BUSY-3', 'Q-HAP-2', 'Q-PLAY-2', 'q-bass-1']
                                      'lastfmtags'  ['acid techno', 'techno', 'acid']
                                        'tag_date'  
                                     'discogstags'  ['techno', 'electronic']

============================== file details ==============================
                                           'mtime'  1620586529.0954092  (2021-05-09 20:55:29)
                             'size'  10453890