======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '172'
                                          'artist'  'Hellsing Original Soundtrack'
                                     'text_people'  ''
                                         'release'  'Raid'
                                           'title'  'Bakuzen Drum No Nageki'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', 'Q-UNU-2', "
 "'Q-LOCALNESS-2', 'q-syn-2', 'Q-PLAY-2', 'q-bass-4', 'q-busy-2', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-1', 'q-drums-3', 'q-other-3', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['soundtrack', 'japanese', 'jazz', 'anime', 'hellsing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '16'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'soundtrack-video-series'
                                             'bpm'  '112.010'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'COMM::XXX'                                         '\r\n'
'COMM:ID3v1 Comment:XXX'                            '\r\n'
'COMM:iTunNORM:eng'                                 (' 00000BC8 00000B20 00002B84 00002963 00022325 00022325 00007C45 00007862 '
 '00022325 00022325')
'TALB' (Album/Movie/Show title)                     'Raid'
'TBPM' (BPM (beats per minute))                     '112.010'
'TCON' (Content type, a.k.a. Genre)                 'soundtrack-video-series'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'Bakuzen Drum No Nageki'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Hellsing Original Soundtrack'
'TRCK' (Track number/Position in set)               '16'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['soundtrack', 'japanese', 'jazz', 'anime', 'hellsing']
'TXXX:q-bass'                                       '4'
'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-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.32 dB'
'TXXX:replaygain_track_peak'                        '0.419386'

========================== row from database ==========================
                                              'id'  261001
                                            'path'  /data/Music/Bulk/0soundtrack/Hellsing (anime ost)/Hellsing OST 1/16-Hellsing Original Soundtrack-Bakuzen Drum No Nageki.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  172
                                           'genre'  soundtrack-video-series
                                        'filesize'  6913321
                                           'mtime'  1637522302
                                   'redo_metaread'  0
                                        'rest_str'   0soundtrack (anime ost) OST 1 16 soundtrack video series
                                      'tag_artist'  Hellsing Original Soundtrack
                                     'tag_release'  Raid
                                       'tag_title'  Bakuzen Drum No Nageki
                                             'bpm'  112.01
                                    'search_title'  'bakuzen':1 'drum':2 'nageki':4 'no':3
                                   'search_artist'  'hellsing':1 'original':2 'soundtrack':3
                                  'search_release'  'raid':1
                                     'search_rest'  '0soundtrack':1 '1':6 'anime':2,3 'ost':4,5 'series':9 'soundtrack':7 'video':8
                                    'search_combo'  '0soundtrack':9 '1':14 'anime':10,11 'bakuzen':1A 'drum':2A 'hellsing':5B 'nageki':4A 'no':3A 'original':6B 'ost':12,13 'raid':8C 'series':17 'soundtrack':7B,15 'video':16
                                    'tag_tracknum'  16
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-2', 'Q-PLAY-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['soundtrack', 'japanese', 'jazz', 'anime', 'hellsing']
                                        'tag_date'  2002
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1637522301.567834  (2021-11-21 20:18:21)
                             'size'  6913321