======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '174'
                                          'artist'  'Insecticide'
                                     'text_people'  ''
                                         'release'  'Insecticide [MC]'
                                           'title'  'untitled'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['drum and bass', 'thrash metal', 'old school thrash metal', 'speed thrash "
 "metal']")
                                     'discogstags'  "['electronic', 'hardcore', 'techno', 'acid']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '21'
                                            'date'  '1983'
                                        'comments'  ''
                                           'genre'  'electronic'
                                             'bpm'  '114.3'
                                             'key'  '3B'
                                        'acoustid'  ''
rest: ''

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

'COMM:iTunNORM:eng'                                 (' 000000DA 00000150 00001148 00001FF9 0000A4B1 0000A4B1 00004D1B 00005BB3 '
 '0000A4B1 0000A4B1')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000A56 000000000075131A 00000000 006A1B44 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'TALB' (Album/Movie/Show title)                     'Insecticide [MC]'
'TBPM' (BPM (beats per minute))                     '114.3'
'TCON' (Content type, a.k.a. Genre)                 'electronic'
'TDRC' (Recording time)                             '1983'
'TENC' (Encoded by)                                 'iTunes 10.5.3'
'TIT2' (Title/songname/content description)         'untitled'
'TKEY' (Initial key)                                '3B'
'TPE1' (Lead performer(s)/Soloist(s))               'Insecticide'
'TRCK' (Track number/Position in set)               '3/21'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'hardcore', 'techno', 'acid']
'TXXX:lastfmtags'                                   ['drum and bass',
 'thrash metal',
 'old school thrash metal',
 'speed thrash metal']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.97 dB'
'TXXX:replaygain_track_peak'                        '0.716375'

========================== row from database ==========================
                                              'id'  763970
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Insecticide - Insecticide [MC, Insecticettes]/03 untitled.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  174
                                           'genre'  electronic
                                        'filesize'  6964275
                                           'mtime'  1636912567
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm [MC, Insecticettes] 03 electronic
                                      'tag_artist'  Insecticide
                                     'tag_release'  Insecticide [MC]
                                       'tag_title'  untitled
                                             'bpm'  114.3
                                    'search_title'  'untitled':1
                                   'search_artist'  'insecticide':1
                                  'search_release'  'insecticide':1 'mc':2,3
                                     'search_rest'  'electronic':5 'insecticettes':3,4 'mc':1,2
                                    'search_combo'  'electronic':10 'insecticettes':8,9 'insecticide':2B,3C 'mc':4C,5C,6,7 'untitled':1A
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  3B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['drum and bass', 'thrash metal', 'old school thrash metal', 'speed thrash metal']
                                        'tag_date'  1983
                                     'discogstags'  ['electronic', 'hardcore', 'techno', 'acid']

============================== file details ==============================
                                           'mtime'  1636912567.444777  (2021-11-14 18:56:07)
                             'size'  6964275